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Crayon CS

Make it comfy

Lesson style

Quick mode shows the key picture, a summary and the practice. Good for a refresher.

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Both fonts are designed to be easy to read. Some readers with dyslexia prefer Lexend.

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Simple pricing

Learn the foundations of computer science for free. Forever.

Foundations

Free

No account needed

  • ✅ All 43 Foundations courses (bachelor’s-level topics)
  • ✅ Every lesson, widget and coding exercise
  • ✅ Every project and checkpoint exam
  • ✅ Concept cards and the Crayon Map
  • ✅ Physics, electronics, writing and career courses
Start learning

Advanced ⭐

$5/month

or $48/year (2 months free)

  • ⭐ All 29 Advanced courses (master’s-level topics)
  • ⭐ AI & ML, LLMs, distributed systems, security, theory and more
  • ⭐ Advanced capstone (thesis-style project)
  • ⭐ First lesson of every Advanced course is free
  • ⭐ Cancel any time, online, in one click

Coming soon

Crayon CS is not an accredited institution and does not award degrees or academic credit.