• 7 new courses: mobile design, choosing options, form validation, sign-in and sign-up, search and filters, cart and checkout, settings • Buttons, input fields, navigation, lists and screen states are rebuilt from scratch • New lesson format: see when a rule doesn't apply, and switch between the Before and After screens • The first 3 lessons of every course are now free • A certificate you've earned stays yours • Lessons and tests open full screen, so a stray swipe can't close them