To totally understand the Qabalistic significance of the Tarot and their correspondences, this is the book. It compares Thoth, Rider-Wait, Golden Dawn and Marseilles decks. Going through each path on the Qabalah and describing its characteristics makes understanding the cards much easier. I have had this book since it first came out and I still refer to it to this day. If wanting to understand the Thoth deck, this book along with "Understanding Aleister Crowley's Thoth Tarot" by Lon Milo Duquette is a must, since they both very accurately explain the Qabalistic significance of the Tarot in very easy to understand terms. Its divinatory explanations are limited however and Wang uses excerpts from the "Golden Dawn" edited by Israel Regardie to cover this. From this part of the book it is a great jumping off point into other books that may supply more info in this area, but for the study of how the Tarot relates to the Qabalah, this book is unsurpassed.
Without a doubt, this is the best book on the Qabalah, bar none. Notice how I spelled Qabalah: this book is from a Western Occult perspective, make no mistake.
Wang explains the Qabalah better than anyone else I've ever read. His language is sometimes a little stiff, but remember this is a very difficult subject. Sometimes words fail the author who attempts to describe such sublime ideas. Wang is able to gently lead one into understanding, like the adept he is.
Now, his Tarot deck leaves a LOT to be desired. I don't recommend that at all. But this book will become your favorite, of that I'm sure. And, it will become the only book you need to understand both the Qabalah, and the Tarot.
Buy this book !!! If this subject interests you, you definitely NEED it.