crystal prescriptions is a small, neat sized book, brimming with valuable information on how crystals can benefit you and your well being.
there is a good introduction to the book on such things as obtaining crystals, cleansing, dowsing and chakra knowledge. followed by a section on how to use the directory.
the directory is then listed alphabetically. simply look up your symptom and along side are the crystals you will need.
all very straight forward and easy to use. believe me, i have used the directory and it works!
the only thing i would say is that you definately need a good range of crystals to use the directory, but the crystals used are not overly expensive, and you arent going to need them all at the same time.