TGB book?

Was just wondering if there was a tgb book availible, similar to the tge book. or is there one in the works possibly? it would be great if there were, but havent seen any evidence that one exsists. i know there are a lot of tutorials and forums etc, but sometimes its hard to find what you need, and me being a non programming dude, a book would be helpful. is there anything out there for tgb?