This book took my diving to another level. As an Instructor/ Dive boat deckhand, I want to be as prepared as I possibly can to help people. I also had the privilage to do some technical training with the author. The diving skills that I learned from him were a small part of the course. What I really benefited from is the attitude that Mike approaches diving with. Spending time with someone that has his experience and passion for the sport will change the whole way you look at diving. Thanks Mike for taking diving seriously and sharing your knowledge with the rest of us! I'm looking foward to a wreck penetration class on the Vandenburg!