hands-on · no install, no signup
A few minutes, a real thing.
Missions
Longer, story-driven scenarios that drop you into a real situation — a failing build, a risky plan — and ask you to handle it. Made for that first week on the job.
for new grads
Your first week: the missing config
It’s day 3. Your manager pings you: the build’s failing and they’re in a meeting — can you look? A config folder got deleted in a bad cleanup. Restore it.
for interns
Break it & fix it: the failing build
A teammate’s commit broke the build — a file got moved by mistake and now an import can’t be found. Read the error, track the file down, and put it back.
for new grads
Ship day: read the plan
Your feature is ready and you ask Claude to deploy it. It writes a tidy, confident, seven-step plan. One step would leak your secrets to the whole internet. Catch it before you approve.
Quick previews
Each one is a single interactive page — type stuff, click stuff, leave with a small win. Pick one, or do all three; XP you earn here counts toward your real progress.
four steps · +110 XP
Make a website from scratch.
Type a command, edit a real HTML file, watch a live preview, ship it to a URL you can text someone. Touches levels 0 and 1.
start with hello →level 2 preview · +40 XP
Talk to Claude.
Ask for something in plain English and watch the whole loop — Claude plans, asks permission, does the work, shows the result. The product, demystified, with nothing to install.
try a conversation →level 2 preview · +40 XP
Be the agent.
Take the wheel for one real task — rename a site everywhere its old name shows. You pick each move; the result of each one points to the next. The agent loop, felt from the inside.
drive the loop →level 3 preview · +30 XP
How software actually works.
Follow a single button click from your browser to the server and back. Frontend, backend, server, database — four scary words, one short trip.
take the trip →level 4 preview · +30 XP
Ask code what it does.
Tap a plain-English question about a real file; Claude explains it back and lights up the exact lines. You don’t decode code — you ask about it.
ask a file →level 5 preview · +30 XP
It’s not just for code.
Point Claude at a messy folder and ask for an HTML page of what’s inside. It writes the script, you approve — and out comes a tool. The whole "this works on my own stuff" unlock.
try a folder →level 5 preview · +30 XP
See a real diff.
Edit one line of code; watch the green-and-red side-by-side appear in real time. Two minutes — the whole grammar of "how does code change."
try the diff →level 6 preview · +40 XP
Allow, or deny?
Read four real permission prompts — a harmless one, a scary one, a one-way door — and make the call. Learn to read blast radius in a minute.
make the call →level 8 preview · +50 XP
Build a tiny git history.
Make four commits, branch off, merge back. Watch the graph grow node by node. The whole git loop, end to end.
try git →Ready for the real thing? start the course at lesson 1 — previews and the full course share the same XP and streak.