Nineteen lessons behind you, three tools, all of it practice. This last one is different: no new features, no prompt that does the work for you. You pick a real problem from your own life and walk it through everything you learned. This is the lesson that proves you do not need this course anymore.
The shape:
- Think it through in chat. Pick something that actually bothers you, then use the interview trick: make Claude question you until it truly understands the problem.
- Do the legwork in Cowork. If real files are involved, point Cowork at a folder of copies and let it sort, extract, or summarize.
- Build the tool in Claude Code. If a small tool would keep the problem solved, build it through either door: a page, a tracker, a calculator.
- Show one human. Walk a friend through what you made until they could do it themselves. Teaching it is the one test you cannot fake.
Not every problem needs all three tools. Choosing which ones it needs is itself the skill this course was about.
Lessons hand you the problem and the method. Real life hands you neither. One self-directed project, however small, is worth more than repeating ten exercises, because choosing is the part no lesson can do for you.
If nothing comes to mind: the family paperwork that lives in six places, the hobby collection nobody can search, the monthly report you assemble by hand.
Stalled halfway? The problem was probably too big. Shrink it until one evening covers it and finish that instead. A finished small thing beats an ambitious stalled one, every time.
Done when: a real problem of yours is solved with the tools you chose, and one person watched you do it or learned it from you.