The bestseller book of 2010 are:-
1. Decision Points by George W. Bush
2. Unbroken: A World War II Story on Survival, Resilience and Redemption by Laura Hillenbrand
3. Autobiography of Mark Twain Vol. 1 by Mark Twain
4. The Ugly Truth (Diary of a Wimpy Kid, Book 5) by Jeff Kinney
5. Life by Keith Richards
I hope the above list answers your question.