I found this book immensely enjoyable when I first read it in 1998, and I'm pleased to say that with a further reading recently, it is as good as I remember. Cassandra Eason has managed to cover a huge range of subjects in a relatively small space - magical alphabets, meditation, ghosts, ritual magic, psychic powers, divination, crystals etc. As well as general information and instruction about each subject, the book also includes 'testimonies' of many people who have written to Cassandra Eason documenting their experiences relating to the text. This book was what got me started on my Pagan path, as it provides a gentle insight into many Pagan practices without blatently advertising them as such. Whether this was intented or not, I don't know.
The only problem I had with this book, and the reason I haven't given it five stars is that I felt it should have been renamed to be more in line with the content - the majority of the book deals with divination, rather than actual psychic development (although I suppose divination can be counted as a subsection of psychic development). However, regardless of that, this is an excellent book and deserves a place on the bookshelf of anyone with esoteric interests.