Still a work in progress but I've been a writing a combined tutorial for modern Javascript and Sphere v2.
Would be interested in any thoughts, latest version can be seen here - note the documents aren't linked together they're just all in the same folder of this gitbhub repo - they're formatted with markdown so should be easy to read directly on GitHub:
https://github.com/rhuanjl/SphereLibs/tree/gettingStarted/Sphere%20v2%20Tutorial