All the complexities of astrology are covered in this book that provides explanations of the principles of astrology and how the basic mechanics work. For the swelling ranks of those who have had a personal or computer programme reading, it will help to clarify what can be meaningless references to signs and planets in the Houses and, for the uninitiated, an exploration of the subject. The book uses 12 themes which broadly correspond to the core meanings of the 12 Houses in the birthchart. Each theme is explained in relation to its House and then each astrological sign is described in terms of the theme.