I have long been looking for such a compilation and finally it seems as if I have this now actually found. I was in Spain and could already test the exercise. At least then you realize that the author is professional. The exercises are carefully selected and all have their place. In addition, you can claim the exercises vary, so that not only very ambitious and good players get their money. In addition to the substantive strengths the whole is extremely handy and quite weather resistant. It fits in your pocket and is generally stable. But quite apart from the wanted but also all real golfers always know in advance what actually do Tiger Woods or Phil Mickelson on the range - and this mystery is now at least partially revealed! In this sense, I can only every golfer who is serious, recommend to add itself the book. With around 20 which is then compared to other more expensive golf equipment rather a bargain and probably even more effective than the latest bat!