Occult Books - The Magick of Aleister Crowley, A Handbook of the Rituals of Thelema. A clear introduction to the works of Crowley by a modern master of the occult. DuQuette takes the mystery out of both the rituals themselves and Crowleyâs writing in this modern grimoire. Step by step, a course of study in plain English, with examples of rituals and explanations of their significance. DuQuette also includes a course of study for Crowleyâs original works with an extensive bibliography and fastidious footnotes. (Formerly titled The Magick of Thelema). Paperback, 304 pages.