This is part one of the tenth book in a series of 21 Brotherhood of Light Courses by C. C. Zain on the Hermetic Sciences, Astrology, Alchemy, Tarot, Kabbalah and the Occult. Although it is an intermediate-level astrology course on interpreting a natal horoscope, it is suitable for beginning students and is an invaluable resource for every professional astrologer. The reader is introduced to the Hermetic system of astrology in a step by step fashion explaining exactly what an astrological birth chart represents and what it can and cannot do. The book presents a detailed list of what a complete astrological reading might include. It is one of the few astrological textbooks that discuss the interpretation for each of the 36 decanates (ten-degree sections of the zodiac). The book teaches the student how to assess the natal chart for temperament, disposition, mental ability, business factors, finances, vocational selection, fortune with love, marriage, partnership, domestic relations, friends, open enemies and personal restrictions and hidden influences.