I found this book to be exceedingly useful, if you use it right. If you want a manual with diagrams and step by step guides, then I'm sure there are many out there but that is not what this book is about. However, if you are looking for an in-depth understanding of what 'Great Sex' really is and how to find it, this is your book. The essential thing it teaches men is that great sex is not all about them. When we learn to focus on our wives and what they need from their love lives, it is then that we truly begin to discover great sex. It takes two to tango, and this book will show you why!