Checkpoint
Nothing to watch here. Do the work described below, then mark it complete.
First build · Advanced beginner · Lesson 31 of 98 · about 1 hour
Milestone: ship it and get one piece of feedback
After this you can say you have shipped a working application that someone else has used.
Why it matters
Send the URL to one person who will actually use it and write down what confused them. Fix one thing they found. Shipping to a real user, even one, is the habit that matters.