If you are becoming familiar with David Deida, then this book is one good place to start, especially if you are doing so as a couple. This book describes Deida's view of masculine/feminine polarity, sexual energy, sexual desire, and more. And Deida being Deida, it is about sex and spirituality and growth. The book gives the sense that we are being offered an ancient way or yoga or art. We get the sense that Deida has learned this tantric-esque wisdom from various teachers, and now he is transmitting his knowledge to us. Maybe that sounds strange, but I've come to trust his advice and insights. An audio CD-ROM is included, in which Deida describes a number of experiential exercises. A remarkable aspect about Deida is that some of what he says about women is counterintuitive to men, and some of what he says about men is counterintuitive to women. And you are likely to disagree with some of what he tells you about yourself and your sex. But when you test these things out with the opposite sex, you find out that he's spot on. He's on to things that most of us don't understand, I believe.Before buying this specific product, take a look at Deida's website/portal. Get a sense of ALL his products and pick the one that makes the most sense. He offers a fair amount of audio material, and if you aren't an avid reader, these may be more helpful. He has recently released a DVD titled "Function, Flow and Glow: The Art of Sexual Yoga," in which he shares his views of therapy, art and spirituality. He claims that he's mostly about teaching the "art" of great sex and loving, though he delves into the other areas with considerable insight and wisdom. The DVD is entertaining and informative (and funny), but I think it is mostly targeted toward the Ken Wilber / integrative spirituality crowd. You might be a bit confused if you are not familiar with the "Integral" world, but I suspect you'll find something of value anyway. I should probably note that Deida doesn't pretend that what he offers is empirically validated science. If that is what you are looking for, you won't find it here.Another good place to start (even if you are a woman, I believe) is "The Way Of The Superior Man: A Spiritual Guide to Mastering the Challenges of Woman, Work, and Sexual Desire." Many view this as Deida's master work, and I can see why. "Superior" in the title is misleading because it is easily construed as macho-arrogant. But I doubt you'll come away with this impression. I learned about this book a few months ago from a woman in San Diego who is also a psychotherapist friend, and she thought this was a really great book. I've been reading this book over and over since then, and I have to say I agree with her. I learned plenty.