Tony Horton is one of my fitness heroes/mentors. I've done P90X a couple times, have done all the P90X3 workouts, and work both of those-- along with workouts he posts on his YouTube channel-- into my daily workout routines. I absorb his interviews, and have watched him change from a hard-core vegetarian (15 years) to a more open-minded fitness advocate.
Bring It!: The Revolutionary Fitness Plan for All Levels That Burns Fat, Builds Muscle, and Shred Inches
is pretty short and simple. It contains some basic motivational material for fitness, three different fitness programs for differing levels of fitness (very similar mindset to P90X3, including pictures and instructions), a cleanse plus diet plan, and recipes. If you are just looking for a place to start, this would be a good book to check out. If you are looking for some new fitness routines you can do at home with minimal equipment, like dumbbells, then thumb to the exercises. If you have P90X or P90X3, just about everything in this book is unnecessary.
Tony does not "have the time" to count calories, although he acknowledges the importance of regulating calories in versus calories out. Like many fitness men, he is in a routine in regards to what he eats and works out every day--including a ridiculous Sunday workout routine-- with an intensity such that he rarely has to worry about too many calories. Tony has written a section on supplements, there are several that he takes including multivitamins. Nothing super commercial, but you know that these days he really pushes Shakeology.
Where Tony Horton differs from other fitness advocates is his emphasis on flexibility-- the importance of incorporating yoga and pilates into your routines. If you've seen Tony, you know he is ridiculously flexible, and he credits yoga as well as great stretching before and after working out. He also recommends a yoga lifestyle for peace of mind.
I wouldn't pay money for this book, but I would check it out from the library. I was hoping for more biographical information on Tony, there is very little in the book. But the book is simple, the lifestyle is simple, and if you want to get fit you won't do wrong by following it. 3.5 stars out of 5.