Treating Crowley's Book of the Law as a Tantra, Tantric Thelema teaches forty-seven practices for invoking and uniting with the Gods of Thelema — methods developed, tested, and used for decades by the Adepts of the Open Source Order of the Golden Dawn.

The tenth anniversary edition expands the original 2010 paperback into a 7×10in hardcover, adding new essays from the Adepts who work these practices daily, and publishing for the first time the Initiatory, Couples, and Death-preparation workings.

It remains Sam Webster's principal book-length statement as a practitioner: a working manual rather than a commentary, written for people who intend to actually do the rites.