Thanks Suzi! I will definitely check those out! I am interested in any suggestions, not just the scientifically based. Those are just the kind of books I typically prefer. Also, testimonials are getting easier to find these days, but I have yet to find a book that is a survey all of the research that is out there. I actually just found a class at a local university that I may check out. How about that, we have classes now 🙂