I have several of Hatmaker's books. I like the reasonable prices, and no nonsense, conversational style and this one is no exception. If you already have significant knowledge of conditioning, I don't think you are going to learn a lot from this book. Some discussion of periodization would be useful. There is virtually nothing on nutrition. (The author points out that many great athletes have had bizarre nutrition plans and suggest you should do what works for you.)

If you want a clear, inexpensive, easy to ready intro that will give you explanations of a number of exercises and specific suggestions for how to assemble them into a program, you will be very pleased with this book. The book has application beyond NHB and MMA, but if you are looking for something for a particular sport that is not one of those or similar (wrestling, bjj, etc.) then you can probably get a resource that is more specific to your needs.