Below is a booklist of some of the books I've studied and found quite helpful. I use a variety of references so that I can get the best understanding out of the reading. Over time, I became less and less dependent on the books, and more on my intuition but initially, the books are great references. What I like about them is that they each have their own perspective on the Hexagrams... You can use them for various reasons in various circumstances.
BOOKLIST FOR STUDYING THE I CHING
Connecting Lines: by Robert R. Leichtman, Carl Japiskse
A New Interpretation of the I Ching for Understanding Personal Relationships
Ruling Lines :A New Interpretation of the I Ching for Decision Making
Healing lines: A new interpretation of the I ching for healing inquiries
The I Ching Workbook by R.L. Wing
The 5,000-year-old Chinese book of wisdom, presented in a unique workbook format designed to help truth seekers find new meaning and enlightenment in its ancient lore.

The I Ching: Or Book of Changes by Richard Wilhelm, Cary Baynes
The I Ching, or Book of Changes, a common source for both Confucianist and Taoist philosophy, is one of the first efforts of the human mind to place itself within the universe. It has exerted a living influence in China for 3,000 years, and interest in it has been rapidly spreading in the West.
I Ching: A New Interpretation for Modern Times by Sam Reifler
Explains what the sixty-four hexagrams of the I Ching reveal about an individual's personality and future. I Ching is a practical and remarkably effective pathway to enlightenment.
The I ching on love: a reinterpretation of the I ching for …by Guy Damian-Knight
Explains how to interpret the hexigrams of the I Ching in relationship to questions of patience, leadership, sincerity, modesty, aesthetics, innocence, depression, friendship, and truth.
The Kwan Yin Book of Changes by Diane Stein
"Kwan Yin", the Chinese Goddess of Mercy & Knowledge, is evoked in this adaptation of the ancient divinatory system. This book returns the I Ching to Women's use and is a simple-to-use tool of great power.
A guide to the I ching by Carol K. Anthony
The philosophy of the I ching by Carol K. Anthony
Very good resource for determining why certain hexagrams are presented in a reading.
The Book of Changes and the Unchanging Truth by Hua-Ching Ni
This masterful translation by Hua-Ching Ni is popular throughout the world.
The Toa of the I Ching Way to Divination by Tsung Hwa Jou
"It's my intention that this book will encourage students to pursue a course of sel-development and to study life, and nature, as it was the pursuit of these things that led to the creation of the I Ching in the first place."
I-Ching: the hexagrams revealed by Gary G. Melyan, Wen-Kuang Chu
Introduces the non-specialist to the workings of the I-Ching giving twenty categories of each hexagram and describes how with six tosses of a coin you can answer any question.
The Astrology of the I Ching by Wen-Kuang Chu
Discusses the teachings of the ancient Chinese book, the I Ching, and explains how to use the I Ching to make predictions
And here's a fun one!
The Tao of Pooh, by Benjamin Hoff
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