The most important part of a zodiac book is knowing your zodiac sign so if you don't know or want to double check, here are the dates:

Aries: March 21-April 19
Taurus: April 20-May 20
Gemini: May 21-June 21
Cancer: June 22-July 22
Leo: July 23-August 22
Virgo: August 23-September 22
Libra: September 23-October 23
Scorpio: October 24-November 21
Sagittarius: November 22-December 21
Capricorn: December 22-January 21
Aquarius: January 22-February 21
Pisces: February 22-March 21