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Free courses · from zero to your first agent

Learn AI by typing to it.

Free, hands-on courses that take you from “what's a token?” to shipping your first agent. Every lesson is a conversation — you write the prompts, run the code, and watch the model think.

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02 — How it works

Every lesson is a conversation.

No 40-minute lectures. A tutor explains one idea, then hands you the keyboard. You type the prompt, the model answers, and the lesson checks what you actually did.

READ
Chat-style lessons you can skim, or switch to terminal mode if that's more your speed.
TYPE
Prompt exercises with live checks — you can't skip ahead by scrolling.
RUN
Real code in a real editor. Copy it, change it, break it on purpose.
Example lesson: the tutor splits “Unbelievably, the cat fetched.” into 8 tokens, then asks whether “ cat” with its leading space is the same token as “cat”.

03 — The path

From one prompt to a team of agents.

Four tracks, each one building on the last. Start at the beginning or jump to wherever you're curious — every course is free.

  1. Foundations

    How LLMs think

    Tokens, next-word prediction, temperature and the context window — no math degree required.
    What is an LLM, really?Tokens & temperature
  2. Prompting

    Talk like you mean it

    Roles, examples, structure and how to tell if a prompt actually got better.
    Prompting that worksContext is everything
  3. Tools & context

    Give the model hands

    Tool calls, retrieval and memory — the pieces every agent is built from.
    Give your model toolsRetrieval without tears
  4. Agents

    Close the loop

    Plan, act, observe, repeat. Then ship your agent to the edge.
    Your first agent loopShip an agent to the edge

Read it. Watch it. Run it.

Every lesson works as text. Some come with a video. The coding ones hand you a real editor.

  • TEXT · ALWAYS

    Chat or terminal

    Read the lesson as a conversation with a tutor, or flip to terminal mode for a CLI feel. Either way, you type to move forward.

  • VIDEO · OPTIONAL

    Watch when it helps

    Chaptered videos with a synced transcript. Jump back to text any time — your place is kept in both.

  • CODE · WHEN IT MATTERS

    A real editor

    Syntax-highlighted, one-click copy, and a “type it yourself” mode for the moments muscle memory matters.

62%CONTEXT
Your context windowFoundations track, 5 of 8 lessonsUp next: Temperature & randomness
12day streak
1,240neurons earned
37prompts written
  • First token
  • Temperature tamer
  • Few-shot
  • Streak ×7
  • Tool wielder

04 — You

Progress you can feel.

Sign in once and every prompt you write, every lesson you finish and every badge you earn follows you to any device. Free — no card, no trial, no catch.

Your first prompt is waiting.

Start lesson 1 →Browse courses

Free forever · progress saves when you sign in