AI Training

⚠️ Pre-release content - use with care

This site is published early so that it can be shared and improved in the open, while most of the planned lessons are still unwritten and existing pages can change or move without notice. Check claims against the cited sources before you rely on them, and report problems in the issue tracker.

Content co-authored by AI. The lessons, checkpoints, and examples on this site are written by people working with AI agents, and reviewed by people.

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Start with: How a language model worksTopic map

Six areas

ConceptsWhat generative AI is and is not, how language models behave, and the vocabulary you need to reason about them. For everyone.

SafetyConfidentiality, hallucination, prompt injection, over-reliance, and what changes once an agent can act. For everyone.

Using agentsWorking with agents day to day: the brief, the autonomy level, the review. For everyone.

Coding with agentsCoding agents in a real engineering workflow: explore, plan, code, review, ship. For engineers.

Customizing agentsInstructions, skills, hooks and MCP servers: shaping an agent to your codebase and team. For engineers.

Building agentsThe agent loop, tools, memory, evaluation and production concerns. For engineers.

Status

Lessons are live in all six areas, twenty-five in total, eight of them in Concepts. Each course page is a lesson graph that also shows the lessons still to come, the topic map marks which topics have a lesson planned, and the glossary links every term a lesson introduces. Checkpoints come in eight interaction types, and every lesson cites its sources by key. Your progress, including a spaced-review schedule, stays in your browser (see your progress and settings). If you use Claude Code or opencode, the tutor gives hints on any lesson inside your agent.

The code behind the site has unit, component, and browser tests, and every example a lesson shows is run in CI on Python 3.9 and 3.14 so the output matches on a stock Mac. Open work is in the issue tracker, starting with the lesson plan for each course.