Code along with Henrik Joreteg and build an entire Native Web App (a.k.a. Single Page App) from scratch; from the first line of code all the way through deploying it live on the Internet.
You'll use Ampersand.js and React to make an app that lets users log in with their GitHub account and edit labels on their repositories.
The course is approximately 5 hours and 100% free.
Also, if you're looking for the original course it's still available here and now also free.