The Definitive Guide to Lift has been announced - http://www.apress.com/book/
The Definitive Guide to Lift, published by APress, is the professionally edited and formatted version of the open-source Lift Book. This discussion group is dedicated to questions and comments regarding The Lift Book (either version).
The open-source version is written using the LyX document processor. You can find the GitHub repository for the book here: http://github.com/tjweir/
Generally you won't need to use LyX since we try to update the master.pdf file whenever we make changes to the text.
If you follow liftbook on Twitter, you'll get notifications of any updates we add.