The following books are excellent sources for understanding the I-Ching as a book of divination, or as a philosophical and cosmological system of study:

I-Ching Mandalas:
Thomas Cleary; Shambhala Press
I-Ching or Book of Changes:
Brian Walker; St. Martin’s Press
The Tao of Yi-Jing:
Tsung-Hwa Jou; Tai Chi Foundation
The Buddhist I-Ching:
Thomas Cleary; Shambhala Press
I-Ching: The Tao of Organization:
Thomas Cleary, Shambhala Press
The Numerology of the I-Ching:
Alfred Huang; Inner Traditions
The Inner Structure of the I-Ching:
Lama Anagarika Govinda; Wheelwright Press [Out of Print]

Books on Taoism

The Tao Te Ching:
Stephen Mitchell; Harper & Row
The Tao Te Ching:
Feng and English, Vintage Books
Harmonizing Yin and Yang:
Eva Wong; Shambhala Press
Awaken Healing Energy Through the Tao:
Mantak Chia; Aurora Press
Vitality, Energy, Spirit:
Thomas Cleary; Shambhala Press
Tao, Subtle Universal Law
Hua-Ching Ni; Seven Star Communications
Anything else by these authors:
T. Cleary, E. Wong, M. Chia And H. Ni

The following books are listed on the instruction manual:

The Taoist I-Ching:
Thomas Cleary; Shambhala Press
The Complete I-Ching:
Alfred Huang; Inner Traditions
The Medical I-Ching:
Miki Shima: Blue Poppy Press
The I-Ching:
Richard Wilhelm: Princeton University Press
The Philosophy of the I-Ching:
Carol Anthony; Anthony Publishing Company
The I-Ching Workbook:
R.L. Wing; Doubleday and Company
The Book of Changes and Unchanging Truth:
Hua-Ching Ni; Seven Star Communications

he TaoDeck Reference Area