Last minute studytime before Vegas

I picked up a recently released book called "Ream Em and Reap" by Joe Navarro. You may be scared that this book is a "beginners" book since it has Phil Helmuth's name on it as well. Phil writes only about 10 of the 200 pages though. This book covers reading players and tells and I'm on my 2nd way through. The only other book in my library covering this subject matter is Mike Caro's "Book of Poker Tells". Is this book better? I wouldnt say that but it is well worth your money and time. They do in fact cover similar material but in totally different formats. Caro's book covers alot of specific tells and what they mean whereas Navarro's book covers alot of what causes these tells and how to catagorize and decipher almost any behavior different from the norm. If you really want to improve your live game play then you need to dedicate some effort to reading both of these books.