Astrologers use a kind of chart or diagram called a horoscope to find out the very special relationship between a person and the Sun, Moon and planets. A horoscope is really a picture of exactly how the sky looked from the place where that particular person was born, at the time of day he or she was born, on the date and year of his or her birth. But instead of making an actual drawing of the sky showing the position of the Sun, Moon and planets at the time and place in question, astrologers use symbols which they place within the horoscope.
This introduction into the basic ideas of astrology is taken from the children's book "Looking at Astrology" by Liz Greene. It was published by Coventure in 1977. Although once written for children, the text is very interesting for everyone who wants to take first steps in astrology.