Learn the Claude Code you're not using yet.

A hands-on course that runs inside Claude Code. It starts with a check-in, so your first lesson teaches you something you didn't already know.

Day 1: the check-in

There's no lesson one. Your first session is a check-in: about 15 minutes of questions, asked and answered in your terminal. It finds what you already know and skips it, so you start right away at the part that's new to you. If the check-in finds no gaps, you didn't need the course.

It keeps finding your gaps

The check-in is only the start. The course keeps a knowledge graph of what you know: every answer and every finished lesson updates it, and your next lesson is built around what you don't know yet.

A dark Claude Code terminal titled ~/check-in. A native input form is rendered inside the session, headed MCP server "ccc-learner" requests your input. It asks what context a subagent begins with when Claude Code delegates a task to it. Four options labeled a to d each describe a different starting context, from the same live window or a carried-over copy of the whole conversation to a fresh context of its own. Below them the form asks how sure you were, with a true or false checkbox where true means sure and false means not sure, and a Your answer field reading not set. Accept and Decline buttons sit at the bottom, above the hints Esc to cancel, up or down arrows to navigate, Backspace to unset, and Space to toggle. — A check-in question inside a Claude Code session. You answer in the terminal, the grade comes back in the same session, and the course moves on to the next thing you don't know.

Lessons you run, not watch

No videos. Every lesson is a Claude Code session in your own terminal: a prepared project, a task, and Claude working through it with you. Some lessons come in variants: run the same task with one value changed, then diff the runs to see what that change did to behavior and cost. You bring your own Claude Code subscription; every lesson runs on it.

The course updates when Claude Code does

Claude Code keeps shipping new features. The course is a subscription: when something changes, you get new lessons and updates to existing ones, included. What you learned doesn't quietly go stale. As lessons for Codex, Pi agent, and OpenCode are released, they're part of the same subscription.

Early access

Early access is open now. The course is still in development; your discount is locked from the day you join.

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