Anyone interested in the topic of Lucid Dreaming must read this book. Back when Thomas Yuschak wrote this book there was little to no research about supplemental aid for lucid dreaming. Now in 2021 there has been some more research, including Galantamine, which is mentioned in this book as well. I haven't tried any of the supplements and am not planning to, but hearing from others it does seem to work. This book gives a lot of insight, and even if you're new to lucid dreaming and don't know much about it, this book is beginner friendly.