Lesson 1: A page that looked different on every phone · 7 min
Before you begin · The release · What went wrong
Learners prepare on their own, you answer questions live, and the surveys tell you what stuck. 10 fields to fill in with your own policy, contacts and locations; each one is highlighted inside the course.



What learners can do at the end of each lesson. Minutes are an estimate.
Before you begin · The release · What went wrong
Structure first · Predict the render · Check
What the browser does · Spot the bug · Errors and events
What a component is · Single-page or multi-page · Pick the right shape
Before it ships · Raise it early · Check
Our conventions · Practice