As many as you like. It's your own autobiography.
A Liar's Autobiography has 240 pages.
Autobiography of Red has 149 pages.
The Autobiography of a Flea has 274 pages.
An Autobiography - Nehru - has 672 pages.
Nadirs - autobiography - has 118 pages.
The Autobiography of My Body has 320 pages.
There are six syllables in the word "autobiography".
The Autobiography of an Unknown Indian has 535 pages.
The Last Enemy - autobiography - has 178 pages.
Starting Over - autobiography - has 352 pages.
Introductions to books can be called introductions, or prefaces, or forwards.
Very Short Introductions was created in 2000.