Max is a nice guy (personally helped me with a download problem when I was trying to download the ebook) and has some useful things to say in the book. I doubt it will have a major impact on your game, but for SOME players, it COULD have a major impact. I enjoy reading his stuff, but it is a pretty short book (about 70 pages). If you are looking for a pleasant little read, buy it. If you are looking for a significant manual for improving your game, it is a doubtful value.