The most important books in meditative, and yogic, practice can be found here. The list is short, but the value is large.
Initial Experiences with the Kabbalah
What working with the letters from Franz Bardon's Key to the True Kabbalah is like. The original art of the Phoenicians as passed to the Egyptians and preserved by esoteric Judaism.
Initiation into Hermetics
The book that inspired SixtySkills. An old school breakdown of the fundamental techniques used in all meditative, and yogic, pursuits.
The Practice of Magical Evocation
Over 500 entities, along with all of their functions, broken down by planetary sphere of influence
that a magician can work with.
The Key to the True Kabbalah
Both a practice manual and an encyclopedia of all the fundamental forces that construct the
universe, their functions and how to work with them. A revolutionary work about the rarest form of magic. To the extent magic exists in the world...This is it.
The Moon Zone
A complete breakdown, and further elaboration, of the spirits of the lunar/moon sphere by one
of the greatest living practitioners of spirit magic.
Circles of Power
The grand-daddy book of ritual magic. All of the major elements of ritual magic clearly spelled out in modern English. If you are a Wiccan, grimoire magician or just interested in how this stuff is done from a traditional Western perspective, this is the book to have.
YouTube Review: https://youtu.be/YgqxOzQ0sqY
Esoteric Mudras of Japan
The only source on internal Shingon magical practice and how to perform a puja ceremony. This ceremony is an extremely powerful method for generating esoteric power that every magician should know.
Qi Gong Empowerment
A thorough explanation of how the East views the meditative, and yogic, arts. For those who have mastered the SixtySkills curriculum, you can unlock most of what is in here.
YouTube Review: https://youtu.be/I5LUpy5a8aM
Path Notes of an American Ninja Master
The book that broke the mold. The first modern description, to include how it was done, of a Westerner going through Kundalini awakening. Revolutionary.
Fourth Uncle in the Mountain
Describes an encounter with an immortal. This description matches those given by others who have had first person encounters with like individuals.
Real Alchemy by Robert Bartlett
How to prepare plant spagyrics, describes the seven basics development path from alchemy to enhance magical/meditative ability and a whole lot more.
YouTube Review: https://youtu.be/edHKB7nmuWg
The Tantric Ritual of Japan
How to conduct a goma fire ritual and get your power on. The only written instructions in English from a key Shingon ritual.
YouTube Review: https://youtu.be/BTcjbiPAg_k