Lrnon

Free forever · open source

Learn AI.
Free.
Forever.

From zero to builder — an open-source curriculum with hands-on practice and honest guidance. Finish a module and you earn a record of it. Certificates add an assessment — designed, not open yet. No paywalls. No tricks.

Start learning — no signup See the full roadmap

No ads · No paywalls · No dark patterns · No account needed

Try one question nowno signup

Your phone unlocks by recognising your face. Is that AI deciding, or AI suggesting?
124
lessons live today
359
flashcards for daily review
17
badges to earn
Free
now, and at every step after

Why is this free?

Because knowledge about AI shouldn't depend on the size of your wallet. We're grant- and donation-funded, fully open source, and we publish our finances. Nothing you need is ever behind money — not lessons, not practice, not records, not certificates.

Published finances

Every grant and every cost, in the open repository.

Vendor-neutral

Tools are covered from an open registry. No sponsorships, ever.

Content CC BY-SA 4.0 · code MIT

Take it, translate it, teach with it. Attribution is all we ask.

Three tracks, one path

Start anywhere that's live, in any order that serves you.

14 of 14 live

Explorer

Understand and use AI well — from absolute zero.

1 of 11 live

Practitioner

Automate and build workflows — no code required.

  • Advanced Prompting
  • Your Own Documents and Sources
  • Untrusted Input and Prompt Injection
  • Custom Assistants
  • Connecting Tools
  • Multi-Step Workflows and Agents
  • Cost, Monitoring and Reliability
  • Data Protection for Workflows
  • Rolling It Out to a Team
  • Vendor Risk and Portability
  • When Not to Automate

planned

Builder

Engineer AI applications, agents, and deployments.

  • Python On-Ramp for AI

Every planned module, on one page →