Earl Anthony's book, Winning Bowling, has several positivepoints. First, I found his concept of spare shooting in this bookvery helpful. Anthony outlines in shooting spares four basicpositions: Strike Position (which also corresponds to Crossover Line), Left Center, Far Left, and Far Right. Anthony essentially takes samples of each spare group and demonstrates what foot position and angle would maximize conversion. I have applied this to my technique, and I have been having greater spare conversion success. However, I found his discussion of shooting Strike Angles, and in particular the first Arrow Angle, somewhat unclear. This book is not one which will aid you in adjusting to given lane conditions, but rather, how to execute each kind of strike shot. In the book, there is no discussion of oily or dry lane conditions. Also useful are the "super secrets", and his description of faults in the swing. I discovered from this book that one of the major faults in my own swing was side-wheeling, and this discovery helped me to swing the ball straighter, as well as save the skin on my thumb! For the advanced bowler, it may not have as much pertinent information, but for the beginning and intermediate bowler wanting to understand the swing a bit better, it is a good book to have on the shelf.