My books do not promise you anything other than how to use hard work and smart play to improve your game. Special attention is given to mastering the aspects of tennis that are not obvious at first. These book will help your game. I will be taking The Tennis Genius off the market soon. WHAT THE HELL IS WRONG WITH AMERICAN TENNIS COVERS the same topics. There will be a second edition of Thirty Things in a few months. WHAT THE HELL... is a great book for coaches and players who have an advanced game and do not understand why they are not achieving better results in their matches. Thirty Things cover more of the basics.