If you do BJJ and you don't buy this book you will have holes in your game. You do not want holes in your game. It's really as simple as that. It will teach you solid fundamentals for all scenarios that you really just cannot be lacking as a newcomer to BJJ. Most guys I know have read this book and therefore have added that into their arsenal. Rolling with someone that has this when you don't will put you at a serious disadvantage. Buy this incredible book. It will help you in a big way.