Astro Fundamentals
HTML-first content sites with island architecture. Eight lessons covering .astro file shape, hydration directives (client:load / idle / visible), layouts + slots, content collections with type-safe Markdown, and SSR / API routes / form actions for the server-rendered pieces.
- Astro
- 19 lessons
- ~4 hours
- Free
- by Fishbones
Learn Astro for free on Libre Academy with the Astro Fundamentals course: 19 interactive lessons you complete by writing real code in a built-in editor, graded instantly by hidden tests. No paywall, no sign-up — it runs in your browser and the free desktop app.
What you get
- Hands-on lessons with a real editor and instant, test-graded feedback.
- Free and open source — no account required to start.
- Runs in your browser, and offline in the free desktop app.
- Astro runs in your browser.
What's inside
- Astro basics
- Islands + layouts
- Content + SSR