The position of the Sun explains your personality, the Moon gives you information on emotional development, while the Ascendant (or Rising sign) tells of how you communicate with others. With your book you will know your Rising sign, which, in astrology, is a vital piece of information and will never change.
The Rising sign is the sign that was ascending on earth's eastern horizon at the precise moment of your birth. It suggests the sign you were meant to be and why all members of one sign aren't alike. You display the qualities of your Rising sign quite naturally along with the qualities of your Sun sign (Zodiac sign).Â Hence you are a composite of the two.