Hari KT has a new post to his site today about a book he's been working around around the Aura framework that provides the missing manual for v2 of the project. He's publishing it as a book over on Leanpub too, so it's easy to grab...and for free too.

Aura has an awesome collection of libraries for different purpose. [...] If you are new to aura, there is probably something you may want to figure out yourself. Some of the components have version 1 and version 2 releases. There is a question of which branch corresponds to which version. [...] But people new to aura may be having hard time to find the specific documentation or may be stuck sometime. [...] I was talking with Paul M Jones regarding the documentation lately, and he too shared some concerns. Talking with him gave me some inspiration to start the missing manual for the aura framework.

The goal of the book it to provide a good resource for people to learn about the framework/components and their use and to help promote Aura. The book is available for free either on Github or Leanpub (or, to help support Hari and the project consider purchasing a copy).