Online publishing has an advantage of extensive reach. There are no restrictions on territory so your book can be purchased and read in any part of the world. Research online publishers, submit your query letter, edit the copy, wait for approval and have your work published online – it is one of the best feelings you could possibly have to see yourself on a virtual shelf in Amazon and a dozen other online bookstores. This is a great course on publishing.
Develop a central theme, main idea or thesis that clearly explains the purpose behind your autobiography. For example, your theme might be about how you overcame obstacles to become a stronger person, or it might explain why a particular passion -- such as mountain climbing or rescuing animals -- is so important to you. Back your theme with details and background information about your life experiences. For example, you might explain that your dad is in the military, so you've had to learn how to adapt quickly to new schools and unfamiliar environments. Or, you might discuss what it was like growing up in a poor, single-parent home, but how your family was always willing to take in injured or stray pets.