Built in 30 minutes. Now earning $50,000 a month, he says.
Pieter Levels’ own figure, reported by 404 Media, March 2025.
A course for people who code with AI
Everyone is coding with AI. Learn to do it properly.
Seven short chapters. Each one teaches a habit, gives you real tasks, and shows you how to check your own work, so you can trust what the AI changes. For developers who feel behind, first-time builders with an idea, and teams that need everyone on the same page.
7 chapters · 28 lessons · 128 workshop tasks · no card needed
Real results, with sources
Rakuten ships a new feature in 5 days, not 24.
A cheese shop got $180,000 in shipping overcharges back.
No technical training. 45 days. 10,000 users.
Sabrine Matos, Plinq, in a Lovable customer story, September 2025.
Three kinds of people arrive here. One path works for all of them.
01 · I write code
You see the trend and feel a step behind.
Hooks, skills, subagents, evals: the chapters go from the basics to running many agents on one job, each with tasks you check yourself.
See the chapters →02 · I have an idea
You've never shipped, and you want to.
Start with what a terminal is and how to undo mistakes. By chapter 4 you write a one-page spec and ship a first working slice without a team.
Start chapter 1 →03 · I run a team
You pay for AI. You want it used well.
Live training for your engineers, recordings of every session, and office hours while they build the habits, scoped and priced before anything starts.
Ask about training →Free · no card needed
Start today. Decide later.
The whole first chapter, and four short reads from tests we ran ourselves.
Chapter 1 · Free
Start coding with Claude
4 lessons · 23 workshop tasks
You want an AI assistant that works inside your own project, and you want to trust what it changes.
You may know Claude from the website or the app; this chapter moves you to Claude Code in the terminal, gently: what a terminal is, why every lesson here uses it, and how to undo any mistake. Then it teaches three habits: give Claude a memory, ask clearly, and check its work. The harder chapters build on them.
- 1
Setting up Claude Code
Why Claude Code belongs inside your project, and how to start safely
- 2
How Claude remembers
Why Claude forgets between sessions, and the two files that fix it
- 3
Prompting
How knowing prompting is key to everything else
- 4
Checking Claude's work
Why a check you can run beats a reply you read
For developers · Tested
Does Claude say “done” when the work is wrong?
Six small coding tasks, 100 runs: did Claude say "done" while the code was wrong?
Read →For developers · Tested
Does Claude follow rules better when it can run a check?
A check script Claude can run got 59 of 60 replies to follow three rules. The same script, never mentioned, got 0 of 60.
Read →For developers · Tested
Does a longer CLAUDE.md get obeyed less?
The same three rules in CLAUDE.md files of 5, 61 and 201 lines, 180 replies: the short file was followed more often.
Read →For developers · Tested
Does a check that runs on every reply beat a written rule?
A rule in CLAUDE.md held for 43 of 60 replies. With a Stop hook it held for 58 of 60, by a second grader.
Read →
How a lesson works
Read a little. Do a task. Check it yourself. Keep the kit.
Every lesson is the same shape, so you always know where you are. Nothing is graded for you. Every task ends with a check you can run and see.
- 1
Read
Why this matters and the one idea of the lesson, in a few minutes.
- 2
Workshop tasks
Four to seven short tasks, in a sandbox or on your own machine, each with a line that says what 'done' looks like.
- 3
Recap
The habit in three lines, so it sticks.
- 4
Takeaway
A worksheet, template or starter kit you keep and reuse on your real project.
Pricing
Start free. Upgrade when you want every chapter. Teams and companies get live training.
Free
$0
All you need to start building and automating, without guesswork.
- Set up Claude and run your first real task
- Write prompts that get the answer you meant
- Give Claude a memory, so it knows your project every time
- Check Claude's work, and catch it when it's wrong
Member
$29a month
Every chapter and the forum.
- Every paid chapter as it is released
- The members' forum, to ask when you're stuck
- Each lesson's takeaway: a worksheet, a template or a kit
- Cancel any time from your account
Small business training
By quote
A half-day of training for your team.
- A half-day training on a video call, for up to ten people
- The call is recorded
- The setup is installed on each machine during the call
- Scope and price are agreed before anything starts
Company program
By quote
For the company that pays for AI, so every engineer uses it well.
- Live online training for your whole engineering team, basics through advanced
- Slides, transcripts and recordings of every session
- Weeks of office hours while your team builds its skills
- Continued support after the training ends