How do free courses work?

Its pages read whole. Multiple-choice questions mark your pick, and a project's terminal answers its own commands (ls, cd, cat). Running code and the rest of the conversation come with your account; where one waits for it, the page says so.

Your Maestro is an AI. Before you have an account, it answers one free question per page, on up to five pages a day, and only your Maestro reads it. It can also tell you why your pick is right, or why it isn't.

The answer stays in the page, under what you asked about. After that, your next question starts the free course with it waiting.

If an answer doesn't come, send it again; it's still free. If it still doesn't, start free and your Maestro answers it there.

← and → turn the page. Ctrl+I (⌘I on a Mac) opens the question to your Maestro. A, B, C pick a choice.

1. 1Choose Start free, on the course's page or on any of its pages.
2. 2Sign in, or make your account with your email: that's all it asks for.
3. 3The course opens on your account, at the page you started from.

Once you're in, your Maestro answers the question you wrote after that free answer. If you picked a choice in a question on the page, your Maestro tells you why. Your question and your pick wait for you in this browser for a day. The pages you've read keep a dot in the outline, and the course's page offers to pick up where you were reading.