To reiterate another reviewer's point, Pelz goes into excrutiating detail on the science of putting. In fact, personally, I think he's a little over the top in the amount of minute detail he covers, and sometimes found myself thinking, come on Dave, I trust you on that point; you can stop explaining now. Still, I give it 5 stars, not because I think it is such an engaging read -- much of it is not -- but because of the thoroughly comprehensive coverage of everything, from the golfer, to the equipment, to green reading, to the science behind everything he explains. Although I am a beginner at this game, I would venture to say that if there is anything about putting this book does not mention, it is probably something you don't need to know.