HumAIn
Free course · 11 lessons · about 3 h 15 min

Prompt well. Save tokens. Build agents.

Short lessons in plain English with exercises. Start with prompting and tokens, then build, save and safely connect your first AI agent.

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The lessons

Take them in order, or jump to the one you need.

Part 1 · Foundations

  1. What Is an AI Agent?

    Chatbot vs agent, the Goal → Plan → Act → Check loop, and why your agent is a robot intern, not a genius.

    ~10 min

  2. How to Prompt Well: The Intern Brief

    The six-part structure (role, context, task, format, examples, constraints), with before/after prompts and exercises.

    ~20 min

  3. Iterate, Verify, and Keep What Works

    Good prompts are rewritten, not born. A 5-step iteration loop, how to fact-check an AI answer, and how to build your own prompt log.

    ~15 min

Part 2 · Tokens

  1. Tokens and Context Windows, Explained

    What tokens are, how to estimate them, what a context window holds, and why AI “forgets” in long chats.

    ~15 min

  2. Token Optimization: Shorter, Cheaper, Sharper

    Eight habits to keep prompts short, reuse and summarize context, and understand cost and usage limits, without making answers worse.

    ~20 min

Part 3 · Agents

  1. What's Inside an Agent: The Agent Brief

    Design an agent on one page before you build anything: goal, instructions, tools, context, limits, and a truth test.

    ~15 min

  2. Build Your First Agent: The $40 Dinner Planner

    Build, run, and honestly test a Dinner Planner agent in any free chat. No coding, no purchases.

    ~25 min

  3. Make It Reusable: Projects and Skills

    Save your agent so you stop retyping it, using a ChatGPT Project, a Claude Project, or a Gemini skill. And why we don't build on custom GPTs or Gems.

    ~20 min

  4. The Power of 1%: Compounding, Honestly

    The maths of getting 1% better every day, the honest limits of the idea, and two agents (Daily 1% Review and the 5-Minute Task Killer) to practise it.

    ~15 min

  5. Integrate It Into Everyday Tools

    Connect your first two-step automation (form or email → spreadsheet) on a free plan, with fake data first and safe limits.

    ~25 min

  6. Stay Safe and Keep Going: The Agent Safety Card

    Prompt injection in plain English, what never to paste, and a personal Agent Safety Card you'll actually use.

    ~15 min

What you'll be able to do: write a clear prompt in two minutes, estimate and reduce token use, write an Agent Brief, build and save a Dinner Planner agent, set up a safe two-step automation, and keep an Agent Safety Card.