Probably my favorite birthday related reference book of all time. Very detailed and informative, with more general information than other similar books.
Each entry starts out with an explanation of you, your sun sign, its decanate, the degree, mode, and element. then your fixed stars, primary stars, their influences, your secret self, work, vacation, numerology, love & relationships, and even specific dates detailing people born on following dates and their relationships to you.
When I say this is one of the best reference books, I mean it! It also contains an easy introduction to astrology, fixed stars, and numerology for those who are just starting out.