Learn any tool, from the foundations up

12 collections · 182 tools · 3,906 lessons. Every tool is a tree: each lesson sits above the ones it builds on, so you always know what to learn next.

Python for data & ML

Arrays, dataframes, plots, classic ML, deep learning and LLM tooling.

Python libraries & frameworks

Web frameworks, HTTP clients, ORMs, testing and the libraries every Python dev meets.

FastAPI28 lessons · 6 hours Django30 lessons · 6 hours Flask22 lessons · 4 hours Requests15 lessons · 3 hours HTTPX15 lessons · 3 hours Pydantic15 lessons · 3 hours SQLAlchemy22 lessons · 4 hours pytest19 lessons · 3 hours Celery16 lessons · 3 hours Jinja13 lessons · 2 hours Click15 lessons · 3 hours aiohttp14 lessons · 3 hours Beautiful Soup15 lessons · 3 hours Scrapy17 lessons · 3 hours boto317 lessons · 3 hours

Python standard library

Batteries included: the modules that ship with Python.

Web development

Front end and the web platform: HTML, CSS, JavaScript frameworks and build tools.

HTML21 lessons · 4 hours CSS27 lessons · 5 hours JavaScript45 lessons · 9 hours TypeScript36 lessons · 7 hours React34 lessons · 8 hours Next.js24 lessons · 5 hours Vue25 lessons · 5 hours Angular26 lessons · 5 hours Svelte19 lessons · 4 hours Tailwind CSS16 lessons · 3 hours HTTP & the web21 lessons · 4 hours Node.js30 lessons · 7 hours npm15 lessons · 3 hours Vite13 lessons · 3 hours webpack14 lessons · 3 hours Google Analytics44 lessons · 7 hours

Backend & APIs

Servers, API styles, auth and messaging.

Node.js30 lessons · 7 hours Express24 lessons · 5 hours FastAPI28 lessons · 6 hours Django30 lessons · 6 hours Flask22 lessons · 4 hours Spring Boot22 lessons · 5 hours ASP.NET Core21 lessons · 4 hours Ruby on Rails20 lessons · 5 hours Laravel19 lessons · 4 hours HTTP & the web21 lessons · 4 hours GraphQL17 lessons · 3 hours gRPC16 lessons · 3 hours OpenAPI13 lessons · 3 hours OAuth, OIDC & JWT16 lessons · 3 hours RabbitMQ15 lessons · 3 hours Apache Kafka20 lessons · 4 hours

Databases & data

Relational and NoSQL databases, warehouses and streaming.

Cloud platforms

AWS, Azure and Google Cloud: the services and concepts teams actually use.

Amazon Web Services44 lessons · 11 hours Microsoft Azure36 lessons · 8 hours Google Cloud38 lessons · 8 hours Kubernetes34 lessons · 6 hours Terraform24 lessons · 4 hours Docker30 lessons · 6 hours

DevOps & infrastructure

Containers, orchestration, infrastructure as code, CI/CD and monitoring.

Docker30 lessons · 6 hours Kubernetes34 lessons · 6 hours Helm14 lessons · 2 hours Terraform24 lessons · 4 hours Ansible18 lessons · 3 hours GitHub Actions18 lessons · 3 hours GitLab CI/CD14 lessons · 3 hours Jenkins15 lessons · 3 hours NGINX18 lessons · 3 hours Prometheus34 lessons · 7 hours Grafana32 lessons · 6 hours Linux28 lessons · 5 hours

Command line & shells

Get fast in the terminal: shells, Linux, editors and the classic Unix tools.

Bash26 lessons · 5 hours Zsh13 lessons · 2 hours Linux28 lessons · 5 hours PowerShell18 lessons · 3 hours Git33 lessons · 6 hours Vim18 lessons · 3 hours tmux13 lessons · 2 hours SSH15 lessons · 3 hours grep, sed & awk18 lessons · 4 hours Regular expressions18 lessons · 3 hours curl14 lessons · 2 hours jq14 lessons · 2 hours Make14 lessons · 3 hours

Mobile apps

Native and cross-platform mobile development.

Swift28 lessons · 6 hours Kotlin26 lessons · 5 hours Dart22 lessons · 4 hours Flutter24 lessons · 6 hours

Everyday developer tools

The tools around the code: version control, editors, formats and builds.

Git33 lessons · 6 hours VS Code14 lessons · 3 hours Regular expressions18 lessons · 3 hours YAML13 lessons · 2 hours Markdown13 lessons · 2 hours Make14 lessons · 3 hours CMake17 lessons · 3 hours Gradle14 lessons · 3 hours Maven14 lessons · 3 hours npm15 lessons · 3 hours curl14 lessons · 2 hours jq14 lessons · 2 hours Google Analytics44 lessons · 7 hours