Book recommendation for advanced Lucid dreaming

hey I just want to give my fellow magicians a heads up. There is a book out there who can help you take your dreaming practices to the next level(and soul travel if you think that soul travel is just an extension of lucid states). it goes into the neurochemicals that play a factor in dreaming and various substances(mostly vitamins) that contribute to their amounts in the brain. the author claims to have 3 or more lucid dreams a week, but I have yet to test many of these methods, though past experiments tell me that this probably correct. If any of you are serious about extending your magical practices beyond waking life, this book is for you.,d.b2U