GitHubLearning & Craft · Interactive guides
Six free interactive experiments on the assumptions that break software: predict the outcome, break it, repair it, and keep the regression test.
Why it’s a gem
Falsehoods-programmers-believe turned into hands-on labs that hand you a real test.
Live experiment lab demonstrating container query behaviour with resizable demos and annotated edge cases.
Free book-length guide to building right-to-left interfaces: logical properties, mirroring, icons, typography and layout flipping.
Beginner Python course where every program draws shapes on a canvas, so you instantly see whether the computer did what you meant.
Cozy pixel-art game teaching the whole Rust Book across 25 islands and 187 levels, compiled with your own rustc and tutored by Ferris via Claude Code.
Plain-English explainer of everything a single web page can learn about you, with expandable entropy math and no third-party tracking.
Interactive Scala 3 lessons in the browser with a live Scastie editor on every page and no install or account.