The book is free!! You just have to visit the website and download it. The facebook support group as wonderful as well. I do fast-5 and really like it. I was doing it before going primal and it was hard for me. Since I switched to primal it has become very easy. I some days will do a fat fast with coconut oil in my coffee during the "fast" and then eat a nice dinner. Some days are just straight up fasting until evening. For the most part I never eat breakfast as I am not hungry yet. Good luck!