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Developer skills, made simple.

Free, beginner-friendly guides to the tools every developer uses every day — written in everyday language, with each step shown for both the terminal and VS Code. Pick a track to start.

Learn Git & GitHub

Version control in plain English — repositories, commits, branches, merges and pull requests — plus an interactive branching playground.

26 chapters · interactive playground

What is Git & GitHub?
Install & Set Up
Repositories
Add & Commit

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Learn npm

The Node package manager, made simple — package.json, installing packages, dependencies, running scripts, versioning and publishing your own.

15 chapters

What is npm?
Install Node & npm
package.json Explained
Installing Packages

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Learn Claude Code

The AI coding agent in your terminal — install it, learn the essential commands and Plan Mode, give it project memory, and reuse proven prompt templates.

17 chapters

What is Claude Code?
Install & First Run
VS Code Setup & Day-One Safety
The Essential Commands

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New to the command line? Don’t worry — every chapter shows the terminal command and the VS Code way to do the same thing, so you can follow along however you prefer.