I just saw this in an Amazon search. It's the Pocket Idiot's Guide to The FairTax. Written by Ken Clark, a CFP. I did a little research, and his website is http://www.kenclarkcfp.com
I don't see anything about the book on his site though. I am still trying to determine if the book is positive or negative towards the FairTax. Someone may want to see if they can find it the next time they are in a book store.