According to author Cassandra Eason, everyone has psychic powers. In this book, she draws from many traditions to present ideas and techniques to help readers find their personal path of psychic development. Included are information and methods for sensing and reading auras, honing telepathic powers, dowsing, astral travel, past-life regressions, and a host of other topics.
This book should've come with a warning sign, " Hey, don't finish this while going to sleep. By the time you wake up, you'd be exhausted fighting battles and nightmares and suffer severe headaches, heart palpitations and panic attacks!"
Now that we got that out of the way, though this book was pretty informative, sure, it didn't really cover the important parts about certain Clair abilities. For eg clairvoyance a large part of it are images or visions that appear in our mind, for most people through dreams and guess what water and drowning dreams are about the most common and there's no dream symbol about it. And like she said there are different variations of runic alphabets and this version messed up the version I have practiced for so long. To have a dream journal was a great advice. I don't know why I stopped after a year of recording my dreams. I will take this book as a sign to start that again. I thought she would touch more about thought transference and also clairaudience but clairaudience is more than hearing a voice in your head, some people hear words that contain clues and claircognizance wasn't talked about detailedly.
As a basic introductory course, this book was a win but I don't feel it to be a 'complete' guide to psychic development if the author insists on only her methods to be effective for scrying or any ability, at all.