It's written by Paul Foster Case with Forward by Tony DeLuce.
Forget the the mind-boggling Golden Dawn ritual techno-lingo and read this gem by an over-looked hidden master - Paul Foster Case. This book lays down the basic groundwork in occultism in an easily graspable way giving the student the necessary knowledge to venture further. A great supplement to Paul Foster Case's Tarot books.
Section A Occult Fundamentals: The Life Power Lecture Series. Lesson 1 - The Life Power Lesson 2 - The Three Principles Lesson 3 - Five Phases of Life Expression Lesson 4 - The Seven Forces Lesson 5 - Twelve Channels of Life Expression Lesson 6 - Correlation of Sound and Colour Lesson 7 - Symbolism of Numbers Lesson 8 - The Wisdom Alphabet Lesson 9 - An Outline of the Qabalah Lesson 10 - The Tree of Life
Section B Spiritual Unfoldment: Seven Steps Lesson 1 - Bondage Lesson 2 - Awakening Lesson 3 - Revelation Lesson 4 - Organisation Lesson 5 - Regeneration Lesson 6 - Realization Lesson 7 - Cosmic Conscious Sup 1 - A Note On Colour Sup 2 - Spiritual or Physical? Sup 3 - The Pi Porportion
This book was originally part of a series of written lessons by paul foster case. Covered in these courses are Qaballa, meditation, alchemy, gematria etc. I have to say as an introduction these are probably the most insightful and succinct series of lessons around, in addition they offer insight that readers familiar in the subjects will not find elsewhere. Originally each lesson took 2 weeks to digest due to the information in each lesson reading them in sequence is heavy reading but very enlightening. Particularly interesting are the music insights into qaballa which the author elaborates on - apparently he was very versed in music.