Published by Arhat Publications, first time in 1997 and then in 2007 (second edition), this book presents some astrological techniques from the late Hellenistic and Medieval periods. Joseph Crane, the co-founder of the Astrological Institute, also wrote Astrological Roots: The Hellenistic Legacy, a book which treats the same subject, but in a more detailed and comprehensive manner.
Chapter 1. Traditional Planetary Dignity and Disposition
You will find here explanations for different aspects that appear when dealing with planetary dignities, such as every important planetary disposition (domicile rulers, exaltation, fall, triplicities, terms and faces), the meanings for dignity and disposition or the planetary sect influence (more about that here). There are two tables, at pages 2 and 10 with all dignities, very clear.