Dr. John Johnson is a professor at California State University and was the defensive backfield coach on U.C.L.A.s NCAA championship team. He has coached with two Super Bowl coaches and has been an NFL scout. He has also coached both tackle and flag football internationally and was the pioneer in making flag football an international game. The book explains the basic fundamentals, the theory needed to win and how to develop game plans that will defeat your opponents. It also gives hints for effectively coaching youth and it illustrates the rules differences between the men's game, the women's game, the coed game and the youth game. Interesting videos can be seen in the ebook version.