The 30th Anniversary of the Classic Guide to Thelema, Aleister Crowley's Spiritual System of Ritual Magick, with a New Introduction by the Author.
This is the perfect introductory text for readers who wonder what the works—rather than the myth—of Aleister Crowley are all about.

DuQuette begins by dispatching some of the myths that have surrounded Crowley's life and legend. He then explores the practice of rituals themselves, unpacking Crowley's often opaque writing and offering his own commentary. Step by step, and in plain English, he presents a course of study with examples of rituals and explanations of their significance. DuQuette also includes a survey of many of Crowley's original works with an extensive bibliography and endnotes.

Formerly titled The Magick of Thelema, then released in a revised edition published in 2003, this Weiser Classics edition includes a new introduction by the author.