Autobiographies and biographies both talk about someones life.
But they're difference between them is that an autobiography is when you write about yourself by yourself while a biography is when someone writes about you by themeselves
A biography is the name given to a book which details somebody's life, often from their birth until their death. If you write a biography of yourself it is called an autobigraphy.
How about Margaret Atwood: A Biography by Nathalie Cook? (ISBN I-55022-308-9, Published by ECW PRESS, 2120 Queen Street East, Suite 200, Toronto, Ontario M4E IE2). It's available in hardcover from...