Secrets of the State Quarters is a guide to finding valuable error coins and high-grade state quarters,transforming a fascinating hobby into a potentially lucrative business. The author, EJ Gold, details techniques for identifying valuable coins, and for promoting their sale through various marketing strategies, including creating jewelry and games. He also discusses spiritual and metaphysical aspects associated with coin collecting which is the study of coinology. Over the years I have employed many of EJ's tool and techniques in working with quarters and pennies. I have always found his advice to be valuable in that it is at once immediately practical and helpful but also thought provoking, opening other creative avenues which I can explore myself. I hope that as you read his lighthearted but knowledge filled words they will have the same effect on you. I wish you the best in your work with coinology!