Choose Language

CS & AI Learning Tracks

Structured courses built from curated YouTube content. Free, multilingual, designed for real-world skills.

64 Live & Populated
22 Released ยท Content Coming
94 Unlocking Soon

64/180 courses fully populated

๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-25
Free Course ๐Ÿ”’ Day 138

AI Agents โ€” ReAct & AutoGPT

Agentic LLMs: ReAct, AutoGPT, tool use, and building reliable AI agents.

๐Ÿ“– 3 lessons
Unlocks 2026-07-25
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-30
Free Course ๐Ÿ”’ Day 174

AI Cost Optimization

Token economics, caching, model routing, and reducing LLM costs at scale.

๐Ÿ“– 3 lessons
Unlocks 2026-08-30
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-29
Free Course ๐Ÿ”’ Day 173

AI Observability โ€” LangSmith & Arize

Trace, monitor, and debug LLM applications with LangSmith, Arize, and Helicone.

๐Ÿ“– 3 lessons
Unlocks 2026-08-29
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-31
Free Course ๐Ÿ”’ Day 175

AI Red Teaming & Prompt Security

Prompt injection, jailbreaks, defenses, and red-teaming LLM apps systematically.

๐Ÿ“– 3 lessons
Unlocks 2026-08-31
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-27
Free Course ๐Ÿ”’ Day 140

AI Safety & Alignment

RLHF, constitutional AI, jailbreaks, and the alignment problem.

๐Ÿ“– 3 lessons
Unlocks 2026-07-27
Courses advanced
๐Ÿ”’ Unlocks 2026-06-19
Free Course ๐Ÿ”’ Day 102

Android Jetpack Compose Mastery

Beyond basics: custom layouts, animations, side effects, and Compose performance.

๐Ÿ“– 3 lessons
Unlocks 2026-06-19
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Apache Airflow Deep Dive

Beyond the basics: dynamic DAGs, sensors, custom operators, and production Airflow deployments.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-04
Free Course ๐Ÿ”’ Day 87

Apache Cassandra โ€” Wide-Column Store

Distributed wide-column NoSQL: Cassandra ring topology, partitioning, and tunable consistency.

๐Ÿ“– 3 lessons
Unlocks 2026-06-04
Courses advanced
๐Ÿ”’ Unlocks 2026-06-06
Free Course ๐Ÿ”’ Day 89

Apache Druid โ€” Real-Time OLAP

Sub-second analytical queries on streaming + historical data with Apache Druid.

๐Ÿ“– 3 lessons
Unlocks 2026-06-06
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Apache Flink โ€” Real-Time Stream Processing

Stateful stream processing with Apache Flink: windows, watermarks, and exactly-once semantics.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses advanced
Free Course โ— Live

Apache Kafka โ€” Event Streaming Platform

Build real-time, event-driven systems with Kafka topics, producers, consumers, and Kafka Streams.

๐Ÿ“– 3 lessons ๐ŸŽฏ Backend development, Distributed systems basics
Start Learning โ†’
Courses advanced
Free Course โ— Live

Apache Spark โ€” Big Data Processing

Process massive datasets at scale with Spark SQL, DataFrames, and Spark Streaming.

๐Ÿ“– 3 lessons ๐ŸŽฏ Python or Scala, SQL basics
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-12
Free Course ๐Ÿ”’ Day 156

API Design Patterns Advanced

Pagination, idempotency, batch endpoints, partial updates, and long-running operations.

๐Ÿ“– 3 lessons
Unlocks 2026-08-12
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-15
Free Course ๐Ÿ”’ Day 159

API Documentation โ€” OpenAPI 3

OpenAPI 3.1 specs, code generation, and developer-friendly API docs.

๐Ÿ“– 3 lessons
Unlocks 2026-08-15
Courses advanced
Free Course โ— Live

API Gateway Patterns

API gateway design: Kong, Tyk, AWS API Gateway. Routing, auth, rate limiting, and BFF patterns.

๐Ÿ“– 3 lessons
Start Learning โ†’
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-14
Free Course ๐Ÿ”’ Day 158

API Rate Limiting & Throttling

Token bucket, sliding window, distributed rate limiting with Redis.

๐Ÿ“– 3 lessons
Unlocks 2026-08-14
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-13
Free Course ๐Ÿ”’ Day 157

API Versioning Strategies

URL versioning, header versioning, deprecation, and managing breaking changes.

๐Ÿ“– 3 lessons
Unlocks 2026-08-13
Courses advanced
๐Ÿ”’ Unlocks 2026-06-28
Free Course ๐Ÿ”’ Day 111

Application Security โ€” SAST & DAST

Find vulnerabilities before attackers do: static analysis, dynamic scanning, and dependency auditing.

๐Ÿ“– 3 lessons
Unlocks 2026-06-28
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-09-03
Free Course ๐Ÿ”’ Day 178

AR/VR Development โ€” WebXR

Build AR and VR experiences in the browser with WebXR, A-Frame, and Three.js.

๐Ÿ“– 3 lessons
Unlocks 2026-09-03
Courses intermediate
Free Course โ— Live

Astro โ€” The Content-Focused Framework

Build blazing-fast content sites with Astro: islands architecture, partial hydration, and zero-JS by default.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
Free Course โ— Live

Authentication & OAuth 2.1

Production auth patterns: OAuth 2.1, OIDC, JWTs, refresh tokens, and session management without the gotchas.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-21
Free Course ๐Ÿ”’ Day 134

Backend for Frontend (BFF)

Tailored backends per client: BFF pattern, GraphQL federation, and the API composition layer.

๐Ÿ“– 3 lessons
Unlocks 2026-07-21
Courses advanced
๐Ÿ”’ Unlocks 2026-07-06
Free Course ๐Ÿ”’ Day 119

Backstage โ€” Developer Portals

Spotify Backstage: service catalogs, scaffolders, and internal developer portals.

๐Ÿ“– 3 lessons
Unlocks 2026-07-06
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-06
Free Course ๐Ÿ”’ Day 150

Bluetooth Low Energy (BLE)

BLE protocol, GATT services, characteristics, and BLE peripheral development.

๐Ÿ“– 3 lessons
Unlocks 2026-08-06
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-09-04
Free Course ๐Ÿ”’ Day 179

Brain-Computer Interfaces

BCI basics: EEG signals, signal processing, and neural decoding for HCI.

๐Ÿ“– 3 lessons
Unlocks 2026-09-04
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-12
Free Course ๐Ÿ”’ Day 125

Browser Extensions

Chrome MV3 extensions: content scripts, service workers, storage, and Web Store publishing.

๐Ÿ“– 3 lessons
Unlocks 2026-07-12
Courses advanced
๐Ÿ”’ Unlocks 2026-06-10
Free Course ๐Ÿ”’ Day 93

Browser Internals โ€” V8 & Rendering

How browsers work: V8 JIT, the rendering pipeline, layout, paint, composite, and event loop.

๐Ÿ“– 3 lessons
Unlocks 2026-06-10
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-08
Free Course ๐Ÿ”’ Day 152

Calculus for Deep Learning

Derivatives, gradients, chain rule, and backpropagation from first principles.

๐Ÿ“– 3 lessons
Unlocks 2026-08-08
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-26
Free Course ๐Ÿ”’ Day 109

CDN & Edge โ€” Cloudflare Workers

Serverless at the edge: Cloudflare Workers, KV, D1, R2, and Durable Objects.

๐Ÿ“– 3 lessons
Unlocks 2026-06-26
Courses advanced
Free Course โ— Live

Chaos Engineering

Break things on purpose: chaos engineering principles, Chaos Mesh, and resilience testing.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-05
Free Course ๐Ÿ”’ Day 88

ClickHouse โ€” Analytics Database

OLAP at scale: ClickHouse column store, merge tree engines, and sub-second analytics queries.

๐Ÿ“– 3 lessons
Unlocks 2026-06-05
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Clojure โ€” Lisp on the JVM

Modern Lisp with immutable data structures, REPL-driven development, and the JVM ecosystem.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

Cloud Computing with AWS

AWS fundamentals: EC2, S3, Lambda, RDS, and IAM. Deploy real applications to the cloud.

๐Ÿ“– 4 lessons ๐ŸŽฏ linux-bash, docker-containers
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-30
Free Course ๐Ÿ”’ Day 113

Cloud Security โ€” IAM Patterns

Least privilege, role assumption, identity federation, and IAM in AWS, GCP, and Azure.

๐Ÿ“– 3 lessons
Unlocks 2026-06-30
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Compilers โ€” How Programming Languages Work

Lexing, parsing, AST, semantic analysis, IR, optimization, and code generation. Build a small compiler.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Computer Graphics & WebGL

Rasterization, shaders, lighting models, and 3D rendering with WebGL and Three.js.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

Computer Networking Fundamentals

How the internet works: TCP/IP, DNS, HTTP, TLS, and network protocols. Essential for backend and security.

๐Ÿ“– 3 lessons
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-23
Free Course ๐Ÿ”’ Day 136

Computer Vision โ€” Object Detection

YOLOv8, DETR, Segment Anything, and modern object detection pipelines.

๐Ÿ“– 3 lessons
Unlocks 2026-07-23
Courses advanced
Free Course โ— Live

Computer Vision with PyTorch

Deep learning for images: CNNs, object detection, segmentation, and modern vision models.

๐Ÿ“– 3 lessons ๐ŸŽฏ Deep Learning fundamentals, Python
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-29
Free Course ๐Ÿ”’ Day 112

Container Security

Image scanning, runtime security, eBPF-based detection, and securing Kubernetes clusters.

๐Ÿ“– 3 lessons
Unlocks 2026-06-29
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-23
Free Course ๐Ÿ”’ Day 167

Contract Testing with Pact

Consumer-driven contracts, Pact broker, and verifying microservice contracts.

๐Ÿ“– 3 lessons
Unlocks 2026-08-23
Courses advanced
๐Ÿ”’ Unlocks 2026-07-14
Free Course ๐Ÿ”’ Day 127

CRDTs โ€” Conflict-Free Data Types

Collaborative apps without conflicts: state-based and op-based CRDTs.

๐Ÿ“– 3 lessons
Unlocks 2026-07-14
Courses advanced
๐Ÿ”’ Unlocks 2026-07-02
Free Course ๐Ÿ”’ Day 115

Cryptography in Practice

Symmetric, asymmetric, hashing, KDFs, and avoiding the common crypto mistakes.

๐Ÿ“– 3 lessons
Unlocks 2026-07-02
Courses intermediate
Free Course โ— Live

Cybersecurity Fundamentals

Core security concepts: OWASP Top 10, encryption, authentication, network security, and ethical hacking basics.

๐Ÿ“– 3 lessons ๐ŸŽฏ linux-bash, apis-rest
Start Learning โ†’
Courses advanced
Free Course โ— Live

Data Engineering Pipelines

Build data pipelines with Python, Airflow, and Spark. ETL, data lakes, and real-time streaming.

๐Ÿ“– 4 lessons ๐ŸŽฏ python-ai, sql-databases, docker-containers
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Data Mesh Architecture

Decentralized data ownership: data mesh principles, data products, and federated governance.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

Data Structures & Algorithms

Core computer science: arrays, trees, graphs, sorting, and searching. Essential for interviews.

๐Ÿ“– 4 lessons โฑ 6h ๐ŸŽฏ python-ai
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Database Internals โ€” Storage Engines

B-trees, LSM-trees, WAL, MVCC, and how databases actually store and retrieve data.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
โš™๏ธ Content Being Added
Free Course โš™ Pending

dbt โ€” Data Build Tool

Transform data in your warehouse using dbt: models, tests, snapshots, and analytics engineering.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses advanced
Free Course โ— Live

Deep Learning & Neural Networks

Neural networks, backpropagation, CNNs, and RNNs with PyTorch. From theory to practice.

๐Ÿ“– 4 lessons โฑ 1h ๐ŸŽฏ machine-learning
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-31
Free Course ๐Ÿ”’ Day 144

DeFi Patterns

AMMs, lending protocols, flash loans, and the DeFi primitives.

๐Ÿ“– 3 lessons
Unlocks 2026-07-31
Courses intermediate
Free Course โ— Live

Design Patterns & Low-Level Design

SOLID principles, Gang of Four design patterns, and low-level design interviews. Required for senior engineering roles โ€ฆ

๐Ÿ“– 4 lessons โฑ 1h ๐ŸŽฏ data-structures-algorithms, python-ai
Start Learning โ†’
Courses intermediate
Free Course โ— Live

DevOps & CI/CD Pipelines

Automate deployments with GitHub Actions, CI/CD pipelines, and infrastructure as code.

๐Ÿ“– 3 lessons ๐ŸŽฏ git-version-control, docker-containers
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-24
Free Course ๐Ÿ”’ Day 137

Diffusion Models Deep Dive

How diffusion models work: forward/reverse process, U-Nets, and beyond Stable Diffusion.

๐Ÿ“– 3 lessons
Unlocks 2026-07-24
Courses intermediate
โš™๏ธ Content Being Added
Free Course โš™ Pending

Discrete Mathematics for CS

Sets, logic, combinatorics, graph theory, and proofs โ€” the math behind every CS topic.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-07-17
Free Course ๐Ÿ”’ Day 130

Distributed Caching Patterns

Cache aside, write-through, write-behind, cache invalidation, and the consistent hashing ring.

๐Ÿ“– 3 lessons
Unlocks 2026-07-17
Courses advanced
๐Ÿ”’ Unlocks 2026-07-13
Free Course ๐Ÿ”’ Day 126

Distributed Consensus โ€” Raft & Paxos

How distributed systems agree: Raft, Paxos, and the CAP theorem in practice.

๐Ÿ“– 3 lessons
Unlocks 2026-07-13
Courses intermediate
Free Course โ— Live

Docker & Containers

Containerize applications with Docker. Build, ship, and run anywhere.

๐Ÿ“– 3 lessons โฑ 3h ๐ŸŽฏ linux-bash
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-07-19
Free Course ๐Ÿ”’ Day 132

Domain-Driven Design (DDD)

Bounded contexts, aggregates, ubiquitous language, and strategic design with DDD.

๐Ÿ“– 3 lessons
Unlocks 2026-07-19
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-17
Free Course ๐Ÿ”’ Day 161

Elasticsearch & Lucene

Inverted indexes, mapping, queries, aggregations, and Elasticsearch in production.

๐Ÿ“– 3 lessons
Unlocks 2026-08-17
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Elixir & Phoenix โ€” Concurrent Web

Build massively concurrent apps with Elixir, the BEAM VM, and the Phoenix LiveView framework.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-02
Free Course ๐Ÿ”’ Day 146

Embedded Systems with Rust

Bare-metal Rust on microcontrollers: embedded-hal, no_std, and the Rust embedded ecosystem.

๐Ÿ“– 3 lessons
Unlocks 2026-08-02
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-07-26
Free Course ๐Ÿ”’ Day 139

Embeddings & Semantic Search

Sentence embeddings, similarity search, hybrid retrieval, and reranking models.

๐Ÿ“– 3 lessons
Unlocks 2026-07-26
Courses advanced
Free Course โ— Live

Ethical Hacking & Penetration Testing

Learn offensive security: reconnaissance, exploitation, and defensive thinking with hands-on labs.

๐Ÿ“– 3 lessons ๐ŸŽฏ Cybersecurity basics, Linux
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-07-15
Free Course ๐Ÿ”’ Day 128

Event Sourcing & CQRS

Store events instead of state: event sourcing, CQRS, and projections.

๐Ÿ“– 3 lessons
Unlocks 2026-07-15
Courses advanced
๐Ÿ”’ Unlocks 2026-07-20
Free Course ๐Ÿ”’ Day 133

Event-Driven Architecture

Event-driven patterns: pub/sub, event streaming, event-carried state transfer.

๐Ÿ“– 3 lessons
Unlocks 2026-07-20
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-05
Free Course ๐Ÿ”’ Day 149

Firmware Development

C, memory-mapped I/O, interrupts, and writing reliable firmware for embedded systems.

๐Ÿ“– 3 lessons
Unlocks 2026-08-05
Courses intermediate
Free Course โ— Live

Flutter โ€” Cross-Platform Mobile Apps

Build beautiful, native-feeling apps for iOS and Android with Flutter and Dart.

๐Ÿ“– 3 lessons ๐ŸŽฏ Programming experience
Start Learning โ†’
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-19
Free Course ๐Ÿ”’ Day 163

Full-Text Search Strategies

Tokenization, stemming, fuzzy matching, and full-text search beyond simple LIKE.

๐Ÿ“– 3 lessons
Unlocks 2026-08-19
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-13
Free Course ๐Ÿ”’ Day 96

Game Development with Unity

Build 2D and 3D games with Unity, C#, and the modern Unity 6 toolchain.

๐Ÿ“– 3 lessons
Unlocks 2026-06-13
Courses advanced
๐Ÿ”’ Unlocks 2026-06-17
Free Course ๐Ÿ”’ Day 100

Game Networking โ€” Multiplayer

Multiplayer architecture: client-server vs peer-to-peer, lag compensation, and rollback netcode.

๐Ÿ“– 3 lessons
Unlocks 2026-06-17
Courses advanced
๐Ÿ”’ Unlocks 2026-06-16
Free Course ๐Ÿ”’ Day 99

Game Physics & Math

Vectors, matrices, quaternions, collision detection, and the math foundation of game physics.

๐Ÿ“– 3 lessons
Unlocks 2026-06-16
Courses beginner
Free Course โ— Live

Git & GitHub โ€” Version Control for Developers

Master Git for version control and GitHub for collaboration. Essential for every developer.

๐Ÿ“– 3 lessons โฑ 2h
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-07-04
Free Course ๐Ÿ”’ Day 117

GitOps with Argo CD

Declarative continuous deployment: Argo CD, App-of-Apps pattern, and progressive rollouts.

๐Ÿ“– 3 lessons
Unlocks 2026-07-04
Courses intermediate
Free Course โ— Live

Go โ€” Cloud-Native Backend Development

Learn Go for building fast, concurrent cloud-native services. Covers goroutines, channels, REST APIs, and deploying to โ€ฆ

๐Ÿ“– 4 lessons โฑ 1h ๐ŸŽฏ python-ai, apis-rest
Start Learning โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-15
Free Course ๐Ÿ”’ Day 98

Godot โ€” Open Source Game Engine

Godot 4: scenes, nodes, GDScript, and shipping games on multiple platforms for free.

๐Ÿ“– 3 lessons
Unlocks 2026-06-15
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-23
Free Course ๐Ÿ”’ Day 106

Google Cloud Platform (GCP)

Compute Engine, Cloud Run, BigQuery, Pub/Sub, and the GCP ecosystem.

๐Ÿ“– 3 lessons
Unlocks 2026-06-23
Courses intermediate
Free Course โ— Live

GraphQL โ€” Modern API Design

Design and build flexible, type-safe APIs with GraphQL, Apollo, and modern tooling.

๐Ÿ“– 3 lessons ๐ŸŽฏ REST API basics
Start Learning โ†’
Courses advanced
Free Course โ— Live

gRPC & Protocol Buffers

Build high-performance RPC services with gRPC, Protocol Buffers, and streaming.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Haskell โ€” Functional Programming

Pure functional programming with Haskell: types, monads, lazy evaluation, and category theory basics.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-05
Free Course ๐Ÿ”’ Day 118

Helm Charts โ€” Kubernetes Packaging

Templating, charts, repositories, and managing Kubernetes apps with Helm 3.

๐Ÿ“– 3 lessons
Unlocks 2026-07-05
Courses advanced
๐Ÿ”’ Unlocks 2026-07-18
Free Course ๐Ÿ”’ Day 131

Hexagonal & Clean Architecture

Ports and adapters, clean architecture layers, and dependency inversion in practice.

๐Ÿ“– 3 lessons
Unlocks 2026-07-18
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-10
Free Course ๐Ÿ”’ Day 154

Information Theory

Entropy, KL divergence, cross-entropy, and the information-theoretic view of ML.

๐Ÿ“– 3 lessons
Unlocks 2026-08-10
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-12
Free Course ๐Ÿ”’ Day 95

Internationalization (i18n)

i18n architecture: ICU MessageFormat, plurals, RTL, locale-aware formatting, and translation pipelines.

๐Ÿ“– 3 lessons
Unlocks 2026-06-12
Courses advanced
๐Ÿ”’ Unlocks 2026-06-18
Free Course ๐Ÿ”’ Day 101

iOS Animations & SwiftUI Mastery

SwiftUI matched geometry, spring animations, transitions, and Lottie. Build delightful iOS UX.

๐Ÿ“– 3 lessons
Unlocks 2026-06-18
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-04
Free Course ๐Ÿ”’ Day 148

IoT โ€” MQTT & CoAP

IoT messaging protocols: MQTT brokers, CoAP, device fleets, and OTA updates.

๐Ÿ“– 3 lessons
Unlocks 2026-08-04
Courses beginner
Free Course โ— Live

Java โ€” From Zero to Enterprise

Java fundamentals through object-oriented design, collections, streams, and Spring Boot โ€” the language powering most โ€ฆ

๐Ÿ“– 5 lessons โฑ 1h
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Kotlin & Android Development

Build Android apps with Kotlin โ€” Google’s preferred language. Covers Jetpack Compose, ViewModels, Room database, โ€ฆ

๐Ÿ“– 4 lessons โฑ 1h ๐ŸŽฏ java-fundamentals
Start Learning โ†’
Courses advanced
Free Course โ— Live

Kubernetes โ€” Container Orchestration at Scale

Master Kubernetes for deploying, scaling, and managing containerized applications in production.

๐Ÿ“– 3 lessons ๐ŸŽฏ Docker & Containers
Start Learning โ†’
Courses intermediate
Free Course โ— Live

LangChain โ€” Build LLM Applications

Build production LLM apps with LangChain: chains, agents, tools, memory, and retrieval.

๐Ÿ“– 3 lessons ๐ŸŽฏ Python, NLP & LLM basics
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-29
Free Course ๐Ÿ”’ Day 142

Layer 2 โ€” Optimistic Rollups

Ethereum scaling: Optimism, Arbitrum, ZK-rollups, and the L2 landscape.

๐Ÿ“– 3 lessons
Unlocks 2026-07-29
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-07
Free Course ๐Ÿ”’ Day 151

Linear Algebra for ML

Vectors, matrices, eigenvalues, SVD, and the linear algebra under every ML algorithm.

๐Ÿ“– 3 lessons
Unlocks 2026-08-07
Courses beginner
Free Course โ— Live

Linux & Bash โ€” Command Line for Developers

Master the Linux command line and Bash scripting. Essential for backend, DevOps, and AI work.

๐Ÿ“– 3 lessons โฑ 6h
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-27
Free Course ๐Ÿ”’ Day 171

LLM Evaluation & Benchmarking

LM-Evaluation-Harness, MMLU, HumanEval, and building eval suites for production LLMs.

๐Ÿ“– 3 lessons
Unlocks 2026-08-27
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

LLM Fine-Tuning with LoRA & QLoRA

Fine-tune large language models efficiently with LoRA, QLoRA, and the HuggingFace ecosystem.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
โš™๏ธ Content Being Added
Free Course โš™ Pending

Logging at Scale โ€” ELK & Loki

Structured logging, log aggregation with the ELK stack and Loki, and log-based debugging.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

Machine Learning with Python

Practical machine learning with scikit-learn, pandas, and numpy. Build real prediction models.

๐Ÿ“– 4 lessons โฑ 19h ๐ŸŽฏ python-ai
Start Learning โ†’
Courses advanced
Free Course โ— Live

Microservices โ€” Patterns & Practices

Design, build, and operate distributed systems using microservices patterns and best practices.

๐Ÿ“– 3 lessons ๐ŸŽฏ System Design basics
Start Learning โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-24
Free Course ๐Ÿ”’ Day 107

Microsoft Azure for Developers

Azure App Service, Functions, Cosmos DB, and the Azure developer toolchain.

๐Ÿ“– 3 lessons
Unlocks 2026-06-24
Courses advanced
Free Course โ— Live

MLOps โ€” Machine Learning in Production

Take ML models from notebook to production: tracking, deployment, monitoring, and CI/CD.

๐Ÿ“– 3 lessons ๐ŸŽฏ Machine Learning basics
Start Learning โ†’
Courses advanced
Free Course โ— Live

Mobile App Architecture โ€” Clean & Scalable

Architect production mobile apps with MVVM, Clean Architecture, modular design, and dependency injection.

๐Ÿ“– 3 lessons ๐ŸŽฏ Mobile development experience
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-21
Free Course ๐Ÿ”’ Day 104

Mobile App Performance Tuning

Profile, measure, and optimize: startup time, frame drops, memory leaks, and battery use.

๐Ÿ“– 3 lessons
Unlocks 2026-06-21
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-20
Free Course ๐Ÿ”’ Day 103

Mobile Push Notifications

FCM, APNs, deep linking, rich notifications, and notification analytics.

๐Ÿ“– 3 lessons
Unlocks 2026-06-20
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-22
Free Course ๐Ÿ”’ Day 105

Mobile Testing โ€” XCTest & Espresso

Unit, UI, snapshot, and integration tests on iOS (XCTest) and Android (Espresso, Compose).

๐Ÿ“– 3 lessons
Unlocks 2026-06-22
Courses intermediate
Free Course โ— Live

Modern JavaScript โ€” ES6 to Async/Await

Deep dive into modern JavaScript: arrow functions, destructuring, promises, async/await, and modules.

๐Ÿ“– 4 lessons โฑ 3h ๐ŸŽฏ web-fundamentals
Start Learning โ†’
Courses intermediate
Free Course โ— Live

MongoDB & NoSQL Databases

Document databases done right: schema design, queries, aggregations, and scaling with MongoDB.

๐Ÿ“– 3 lessons ๐ŸŽฏ Database fundamentals
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Multimodal Models โ€” CLIP & BLIP

Models that bridge vision and language: CLIP, BLIP, and multimodal embeddings for search and generation.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-24
Free Course ๐Ÿ”’ Day 168

Mutation Testing

Test the tests: mutation testing with Stryker, PIT, and mutmut.

๐Ÿ“– 3 lessons
Unlocks 2026-08-24
Courses intermediate
Free Course โ— Live

Next.js โ€” Full-Stack React Framework

Build modern, server-rendered React apps with App Router, Server Components, and Vercel deployment.

๐Ÿ“– 3 lessons ๐ŸŽฏ React.js basics
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-01
Free Course ๐Ÿ”’ Day 145

NFT Smart Contracts

ERC-721, ERC-1155, royalties, metadata, and NFT marketplace patterns.

๐Ÿ“– 3 lessons
Unlocks 2026-08-01
Courses advanced
Free Course โ— Live

NLP & Large Language Models

Natural language processing, transformers, and building applications with LLMs like GPT and Claude.

๐Ÿ“– 3 lessons ๐ŸŽฏ machine-learning, deep-learning
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Node.js โ€” Server-Side JavaScript

Build production servers, APIs, and tools with Node.js, Express, and modern async patterns.

๐Ÿ“– 3 lessons ๐ŸŽฏ JavaScript fundamentals
Start Learning โ†’
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-11
Free Course ๐Ÿ”’ Day 155

Numerical Computing

Floating-point pitfalls, numerical stability, BLAS, and high-performance numerical code.

๐Ÿ“– 3 lessons
Unlocks 2026-08-11
Courses advanced
Free Course โ— Live

OpenTelemetry & Distributed Tracing

Instrument microservices with OpenTelemetry: traces, metrics, logs, and the unified observability stack.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Operating Systems Concepts

Processes, threads, scheduling, virtual memory, file systems, and how Linux really works.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-25
Free Course ๐Ÿ”’ Day 169

Performance Testing with k6

Load testing scripts in JavaScript, scenarios, thresholds, and production-like simulations.

๐Ÿ“– 3 lessons
Unlocks 2026-08-25
Courses advanced
๐Ÿ”’ Unlocks 2026-07-07
Free Course ๐Ÿ”’ Day 120

Platform Engineering

IDPs, golden paths, and the modern platform engineering team.

๐Ÿ“– 3 lessons
Unlocks 2026-07-07
Courses intermediate
Free Course โ— Live

PostgreSQL โ€” Advanced Queries & Performance

Master Postgres: indexing, query planning, JSONB, window functions, and tuning for scale.

๐Ÿ“– 3 lessons ๐ŸŽฏ SQL basics
Start Learning โ†’
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-09
Free Course ๐Ÿ”’ Day 153

Probability & Statistics

Distributions, Bayes theorem, hypothesis testing, and the statistical foundations of ML.

๐Ÿ“– 3 lessons
Unlocks 2026-08-09
Courses intermediate
Free Course โ— Live

Prometheus & Grafana

Metrics-based monitoring: Prometheus scraping, PromQL queries, and Grafana dashboards.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Prompt Engineering & AI Agents

Master prompt design, chain-of-thought reasoning, and build autonomous AI agents with LangChain and the OpenAI API.

๐Ÿ“– 5 lessons โฑ 1h ๐ŸŽฏ python-ai, nlp-and-llms
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-22
Free Course ๐Ÿ”’ Day 166

Property-Based Testing

Generative testing with Hypothesis, fast-check, and finding bugs at the property level.

๐Ÿ“– 3 lessons
Unlocks 2026-08-22
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-03
Free Course ๐Ÿ”’ Day 116

Pulumi โ€” Infrastructure as Code

IaC in real languages (TypeScript, Python, Go) with Pulumi instead of HCL.

๐Ÿ“– 3 lessons
Unlocks 2026-07-03
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-10
Free Course ๐Ÿ”’ Day 123

PWAs & Service Workers

Progressive Web Apps: service workers, offline-first, push notifications, and installable web.

๐Ÿ“– 3 lessons
Unlocks 2026-07-10
Courses beginner
Free Course โ— Live

Python for AI โ€” Zero to Agent

Complete Python course for beginners targeting AI/ML applications. No prior programming experience needed.

๐Ÿ“– 6 lessons โฑ 1h
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-09-02
Free Course ๐Ÿ”’ Day 177

Quantum Computing Fundamentals

Qubits, superposition, entanglement, and quantum algorithms with Qiskit.

๐Ÿ“– 3 lessons
Unlocks 2026-09-02
Courses intermediate
Free Course โ— Live

RabbitMQ โ€” Message Queues

Decouple services with RabbitMQ: queues, exchanges, routing, and consumer patterns.

๐Ÿ“– 3 lessons
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-28
Free Course ๐Ÿ”’ Day 172

RAG System Design Advanced

Hybrid search, query rewriting, reranking, hierarchical chunking, and production RAG.

๐Ÿ“– 3 lessons
Unlocks 2026-08-28
Courses intermediate
Free Course โ— Live

React Native โ€” Cross-Platform Mobile

Build native iOS and Android apps from one JavaScript codebase using React Native, Expo, and modern patterns.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses intermediate
Free Course โ— Live

React.js โ€” Modern UI Development

Build modern web UIs with React. Components, hooks, state management, and real projects.

๐Ÿ“– 4 lessons โฑ 15h ๐ŸŽฏ web-fundamentals, javascript-modern
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-03
Free Course ๐Ÿ”’ Day 147

Real-Time Operating Systems (RTOS)

FreeRTOS, Zephyr, tasks, schedulers, and real-time guarantees.

๐Ÿ“– 3 lessons
Unlocks 2026-08-03
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Recommendation Systems

Collaborative filtering, matrix factorization, neural recommenders, and ranking with two-tower models.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

Redis โ€” Caching & In-Memory Data

Use Redis for caching, sessions, queues, leaderboards, and pub/sub at scale.

๐Ÿ“– 3 lessons ๐ŸŽฏ Backend development basics
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Reinforcement Learning

Agents that learn from rewards: Q-learning, policy gradients, and deep RL with PPO.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
Free Course โ— Live

REST APIs โ€” Design and Build

Design and build REST APIs with Python FastAPI. Authentication, databases, and deployment.

๐Ÿ“– 3 lessons โฑ 23h ๐ŸŽฏ python-ai, sql-databases
Start Learning โ†’
Courses advanced
Free Course โ— Live

Rust โ€” Systems Programming Without Fear

Learn memory-safe systems programming with Rust: ownership, borrowing, and zero-cost abstractions.

๐Ÿ“– 3 lessons ๐ŸŽฏ Programming experience in any language
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-07-16
Free Course ๐Ÿ”’ Day 129

Sagas & Distributed Transactions

Distributed transaction patterns: sagas, two-phase commit, and Outbox.

๐Ÿ“– 3 lessons
Unlocks 2026-07-16
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Scala for Backend Development

Hybrid functional and OO programming on the JVM with Scala 3, Akka, and Play.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-20
Free Course ๐Ÿ”’ Day 164

Search Relevance & BM25

TF-IDF, BM25, learning-to-rank, and tuning search relevance.

๐Ÿ“– 3 lessons
Unlocks 2026-08-20
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-21
Free Course ๐Ÿ”’ Day 165

Search UI Patterns

Autocomplete, faceted search, instant search, and search analytics.

๐Ÿ“– 3 lessons
Unlocks 2026-08-21
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-11
Free Course ๐Ÿ”’ Day 94

SEO Engineering for Developers

Technical SEO: crawlability, sitemaps, structured data, Core Web Vitals, and search Console.

๐Ÿ“– 3 lessons
Unlocks 2026-06-11
Courses advanced
๐Ÿ”’ Unlocks 2026-06-25
Free Course ๐Ÿ”’ Day 108

Serverless with AWS Lambda Advanced

Beyond hello world: cold starts, layers, container Lambdas, EventBridge, and SAM/CDK.

๐Ÿ“– 3 lessons
Unlocks 2026-06-25
Courses advanced
๐Ÿ”’ Unlocks 2026-06-27
Free Course ๐Ÿ”’ Day 110

Service Mesh โ€” Istio & Linkerd

Traffic management, mTLS, observability, and the service mesh pattern with Istio and Linkerd.

๐Ÿ“– 3 lessons
Unlocks 2026-06-27
Courses advanced
Free Course โ— Live

Site Reliability Engineering (SRE)

SLIs, SLOs, error budgets, on-call rotations, and the SRE mindset for production reliability.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses intermediate
โš™๏ธ Content Being Added
Free Course โš™ Pending

Snowflake โ€” Cloud Data Warehouse

Snowflake architecture, virtual warehouses, semi-structured data, and cost optimization.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-28
Free Course ๐Ÿ”’ Day 141

Solana Development

Solana smart contracts in Rust: Anchor framework, PDAs, and the SVM.

๐Ÿ“– 3 lessons
Unlocks 2026-07-28
Courses intermediate
Free Course โ— Live

Solid.js โ€” Fine-Grained Reactivity

Reactive primitives without a virtual DOM: signals, effects, and the performance-first Solid.js framework.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
Free Course โ— Live

Solidity โ€” Smart Contracts on Ethereum

Build, test, and deploy decentralized apps with Solidity, Hardhat, and the EVM ecosystem.

๐Ÿ“– 3 lessons ๐ŸŽฏ Programming experience
Start Learning โ†’
Courses intermediate
โš™๏ธ Content Being Added
Free Course โš™ Pending

Speech Recognition with Whisper

OpenAI Whisper: speech-to-text, language detection, diarization, and production STT pipelines.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses beginner
Free Course โ— Live

SQL & Databases โ€” From Zero to Query Master

Learn SQL from scratch โ€” SELECT to JOIN to subqueries. Work with real databases.

๐Ÿ“– 4 lessons โฑ 15h
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Stable Diffusion โ€” AI Image Generation

Generate, control, and customize AI images with Stable Diffusion, ControlNet, and LoRA.

๐Ÿ“– 3 lessons ๐ŸŽฏ Python basics
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-22
Free Course ๐Ÿ”’ Day 135

Strangler Fig โ€” Legacy Migration

Incrementally replace legacy systems with the strangler fig pattern.

๐Ÿ“– 3 lessons
Unlocks 2026-07-22
Courses advanced
๐Ÿ”’ Unlocks 2026-07-01
Free Course ๐Ÿ”’ Day 114

Supply Chain Security

SBOM, sigstore, SLSA, and securing the software supply chain end-to-end.

๐Ÿ“– 3 lessons
Unlocks 2026-07-01
Courses intermediate
Free Course โ— Live

Svelte & SvelteKit โ€” Compiled UI

Write less code with Svelte 5: runes, reactivity, and SvelteKit for full-stack apps.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Swift & iOS Development

Build native iPhone apps with Swift, SwiftUI, and modern Apple frameworks.

๐Ÿ“– 3 lessons ๐ŸŽฏ Programming experience
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-09-05
Free Course ๐Ÿ”’ Day 180

Synthetic Biology + Computing

DNA computing, biological circuits, and the intersection of biology and CS.

๐Ÿ“– 3 lessons
Unlocks 2026-09-05
Courses advanced
Free Course โ— Live

System Design โ€” Scalability and Architecture

Design scalable systems: load balancers, caches, databases, and microservices. Essential for senior roles.

๐Ÿ“– 4 lessons ๐ŸŽฏ sql-databases, apis-rest, docker-containers
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Tailwind CSS v4 โ€” Utility-First Styling

Master Tailwind CSS v4: the @theme directive, design tokens in CSS, and the new lightning-fast Rust engine.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
Free Course โ— Live

Terraform โ€” Infrastructure as Code in Depth

Provision and manage cloud infrastructure declaratively with Terraform across AWS, GCP, and Azure.

๐Ÿ“– 3 lessons ๐ŸŽฏ Cloud Computing basics
Start Learning โ†’
Courses intermediate
Free Course โ— Live

Test-Driven Development with Jest

Build reliable software with TDD, unit/integration testing patterns, and Jest in JavaScript/TypeScript.

๐Ÿ“– 3 lessons ๐ŸŽฏ JavaScript or TypeScript
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Theory of Computation

Automata, regular languages, context-free grammars, Turing machines, and computational complexity.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-07
Free Course ๐Ÿ”’ Day 90

Time-Series with InfluxDB

Time-series workloads: InfluxDB, Flux queries, downsampling, and IoT pipelines.

๐Ÿ“– 3 lessons
Unlocks 2026-06-07
Courses intermediate
Free Course โ— Live

TypeScript โ€” JavaScript with Superpowers

Add static typing to JavaScript with TypeScript. Fewer bugs, better tooling, production-ready code.

๐Ÿ“– 3 lessons โฑ 5h ๐ŸŽฏ javascript-modern
Start Learning โ†’
Courses advanced
๐Ÿ”’ Unlocks 2026-06-14
Free Course ๐Ÿ”’ Day 97

Unreal Engine for Programmers

Unreal Engine 5: C++ programming, Blueprints, Nanite, Lumen, and shipping games.

๐Ÿ“– 3 lessons
Unlocks 2026-06-14
Courses advanced
Free Course โ— Live

Vector Databases & RAG

Retrieval-Augmented Generation: embeddings, vector search, Pinecone/Weaviate, and production RAG.

๐Ÿ“– 3 lessons ๐ŸŽฏ LLM basics, Python
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-08-18
Free Course ๐Ÿ”’ Day 162

Vector Search with FAISS

Approximate nearest neighbor: FAISS, HNSW, and large-scale vector search.

๐Ÿ“– 3 lessons
Unlocks 2026-08-18
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-26
Free Course ๐Ÿ”’ Day 170

Visual Regression Testing

Percy, Chromatic, and Playwright snapshots for catching visual bugs automatically.

๐Ÿ“– 3 lessons
Unlocks 2026-08-26
Courses intermediate
Free Course โ— Live

Vue.js โ€” Progressive Frontend Framework

Master Vue 3, the Composition API, and the modern Vue ecosystem for reactive web UIs.

๐Ÿ“– 3 lessons ๐ŸŽฏ JavaScript fundamentals, HTML/CSS
Start Learning โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-09
Free Course ๐Ÿ”’ Day 92

Web Accessibility (WCAG 2.2)

Build for everyone: semantic HTML, ARIA, keyboard navigation, screen readers, and WCAG 2.2 AA compliance.

๐Ÿ“– 3 lessons
Unlocks 2026-06-09
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-08
Free Course ๐Ÿ”’ Day 121

Web Animations โ€” GSAP & CSS

GSAP for complex animations, scroll triggers, and physics. Plus modern CSS animation features.

๐Ÿ“– 3 lessons
Unlocks 2026-07-08
Courses intermediate
๐Ÿ”’ Unlocks 2026-07-11
Free Course ๐Ÿ”’ Day 124

Web Components & Lit

Framework-agnostic UI with native Web Components and the Lit library.

๐Ÿ“– 3 lessons
Unlocks 2026-07-11
Courses beginner
Free Course โ— Live

Web Development Fundamentals

Learn HTML, CSS, and JavaScript from scratch. Build real websites by the end of the course.

๐Ÿ“– 4 lessons โฑ 1h
Start Learning โ†’
Courses intermediate
๐Ÿ”’ Unlocks 2026-06-08
Free Course ๐Ÿ”’ Day 91

Web Performance โ€” Core Web Vitals

Master LCP, INP, and CLS: profiling, image optimization, code splitting, and the rendering critical path.

๐Ÿ“– 3 lessons
Unlocks 2026-06-08
Courses advanced
Free Course โ— Live

WebAssembly โ€” High-Performance Web

Run native-speed code in the browser with WebAssembly, Rust, and modern WASM toolchains.

๐Ÿ“– 3 lessons ๐ŸŽฏ JavaScript, Some C/C++ or Rust
Start Learning โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-09-01
Free Course ๐Ÿ”’ Day 176

WebAssembly Component Model

WIT, components, and the future of WASM as a universal binary format.

๐Ÿ“– 3 lessons
Unlocks 2026-09-01
Courses advanced
๐Ÿ”’ Unlocks 2026-07-09
Free Course ๐Ÿ”’ Day 122

WebGPU & 3D on the Web

WebGPU: the next-generation graphics API for the web. Compute shaders and modern 3D rendering.

๐Ÿ“– 3 lessons
Unlocks 2026-07-09
๐Ÿ’ป intermediate
๐Ÿ”’ Unlocks 2026-08-16
Free Course ๐Ÿ”’ Day 160

Webhook Patterns

Webhook design: signing, retries, idempotency, and replay protection.

๐Ÿ“– 3 lessons
Unlocks 2026-08-16
Courses intermediate
Free Course โ— Live

WebSockets & Real-Time Backend

Build real-time backends with WebSockets, Socket.IO, scaling, and presence tracking.

๐Ÿ“– 3 lessons
Start Learning โ†’
Courses advanced
โš™๏ธ Content Being Added
Free Course โš™ Pending

Zig โ€” Modern Systems Programming

Zig: a manual-memory systems language with compile-time evaluation and no hidden control flow.

๐Ÿ“– 3 lessons
Preview Syllabus โ†’
๐Ÿ’ป advanced
๐Ÿ”’ Unlocks 2026-07-30
Free Course ๐Ÿ”’ Day 143

zkSNARKs & Zero-Knowledge Proofs

Zero-knowledge proofs: zkSNARKs, Circom, and privacy-preserving computation.

๐Ÿ“– 3 lessons
Unlocks 2026-07-30