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Complete Student Course in the Occult
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The Magick of Thelema: A Handbook of the Rituals of Aleister CrowleyThe Magick of Thelema: A Handbook of the Rituals of Aleister Crowley by Lon Milo Duquette
Buy new: $14.00 / Used from: $6.97
A short compendium of the principal Thelemic rituals; there are philosophic pitfalls throughout, but it helps to have all the ritual in one concise book.
Magick: Book 4, Liber Aba (Magick Bk. 4) (Bk.4)Magick: Book 4, Liber Aba (Magick Bk. 4) (Bk.4) by Aleister Crowley
Buy new: $50.40 / Used from: $39.90
Of value to Thelemites and other occultists as well. Crowley's detailed description of the philosophy of Magick is illuminating to everyone.
777 And Other Qabalistic Writings of Aleister Crowley777 And Other Qabalistic Writings of Aleister Crowley by Aleister Crowley
Buy new: $13.57 / Used from: $5.66
Very helpful from the standpoint of constructing your own rituals. Also an invaluable reference work for Qabalistic and Gematric symbolism.
Mystical QabalahMystical Qabalah by Dion Fortune
Buy new: $14.78 / Used from: $3.51
Probably the modern classic of the esoteric Qabalah. This is an excellent introduction to the basics of the sephiroth. The "elements" are not Wiccan: *this* is where they came from.
The Golden Dawn: The Original Account of the Teachings, Rites & Ceremonies of the Hermetic Order (Llewellyn's Golden Dawn Series)The Golden Dawn: The Original Account of the Teachings, Rites & Ceremonies of the Hermetic Order (Llewellyn's Golden Dawn Series) by Israel Regardie
Buy new: $25.05 / Used from: $14.98
Most of what comes out of Llewellyn is filth; this is a prime example of when they get it right. Israel Regardie's monumental expose of the Golden Dawn. This is great for occult basics.
AionAion by Dead Can Dance
Buy used from: $2.85
For spiritual meditation, the Sufis had it right--no music (though dervishes use it). For "lighter" work, however, this is splendid. It could also be used *before* ritual and/or meditation is begun.
The Book of the Sacred Magic of Abramelin the MageThe Book of the Sacred Magic of Abramelin the Mage
Buy new: $11.01 / Used from: $3.99
A very old grimoire, from whence comes much modern occult philosophy.
The Goetia: The Lesser Key of Solomon the King (Clavicula Salomonis Regis)The Goetia: The Lesser Key of Solomon the King (Clavicula Salomonis Regis) by Aleister Crowley
Buy new: $13.57 / Used from: $11.47
Another very basic grimoire. Take a look at the others in the series, as well.
The Tree of Life: An Illustrated Study in MagicThe Tree of Life: An Illustrated Study in Magic by Israel Regardie
Buy new: $16.47 / Used from: $14.95
Dr. Regardie's book is a classic, though his language is "gushy", sentimental, and a little overblown--all dangers. Get beyond that (and those pointless footnotes by the editors!) and there's value.
The Way of the Sufi (Compass)The Way of the Sufi (Compass) by Idries Shah
Buy new: $11.56 / Used from: $1.93
I'm only roughly halfway through his "The Sufis", but so far I've found this book a better introduction to Sufi thought, probably because of his translations of actual Sufi writings...
Book of LiesBook of Lies by Aleister Crowley
Buy new: $11.53 / Used from: $9.95
Very much in the Sufi vein itself, though describing Hermetic (is there a difference?) material.
Gnosticism: New Light on the Ancient Tradition of Inner KnowingGnosticism: New Light on the Ancient Tradition of Inner Knowing by Stephen A Hoeller
Buy new: $11.53 / Used from: $2.92
"Christian mysticism", of a heretical sort. A good introduction, but Hoeller's description of Qabalah and Theosophy as "Gnosticism" is plain bad scholarship--gnostic, maybe, but not Gnosticism.
The Satanic BibleThe Satanic Bible by Anton Szandor Lavey
Buy new: $7.99 / Used from: $4.86
LaVey's book is in my opinion "mush"--to put it mildly. Little more than modern hedonism with a nonsensical magical theory, but it's the "pop music" of occultism.
The NecronomiconThe Necronomicon by Simon
Buy new: $7.99 / Used from: $1.94
All I've got to say is: Rob Zombie should make this a movie.
High Magic's Aid: Wonderful Tale of Medieval WitchcraftHigh Magic's Aid: Wonderful Tale of Medieval Witchcraft by Gerald Brosseau Gardner
Buy used from: $55.00
The book which began Wicca. Curiously, the "Old Religion" looks a lot like Masonry and Thelema here; proof Gardner fabricated it--but it's still valuable.
The American Ephemeris for the 21st Century: 2000 to 2050 at MidnightThe American Ephemeris for the 21st Century: 2000 to 2050 at Midnight by Neil F. Michelsen
Buy new: $17.05 / Used from: $10.00
Never used it though I'm about to buy it; just figured I'd stick it in there...