The book is called "How to make your electric guitar play great!" by Dan Erlewine. Found it at borders for 20 bucks, cheaper to order it at amazon but I wanted it now.
The guy explains what to look for in a used guitar as far as possible trouble spots and how to do a complete set up on your guitar. Has photos and real world simple tricks of the trade to make the process easy, quick and even shows you how to improvise tools instead of having to buy them.
IMO a great resource!
Enjoy