You can't go wrong with Berklee Press' "Working in the Home Studio with Pro Tools." I found it ultra helpful as I navigated the learning curve. I comes with a CD-R with some sessions. VERY helpful.
This is a great book. It really helped me with the basics. At first the PT manual was like Japanese but after I read this book and did the demos I had a good foundation of PT.
i would say the berklee press book prod in the home studio with pt is the best FIRST book. main reason because if you just got into pt, its actually in english you can understand. i think that important for the first book. i also have the visual quick start guide for pt. that is good also.