From The Guardian:
"When I was young I was reading anything and anything I could lay my hands on. I was a veracious [sic] to the point of insane reader. When I got the Carnegie Medal for The Graveyard Book I gave a talk about libraries and how incredibly important libraries were to me.
"As a kid I would get my parents to drop me off at my local library on their way to work during the summer holidays and I would walk home at night. For several years I read the children's library until I finished the children's library. Then I moved into the adult library and slowly worked my way through them. With the kids' library I did it alphabetically but I discovered I couldn't do that with the adult one because there were too many big boring books to read, so I did it by interesting covers."
He talks about his Doctor Who episode too! Which I didn't really like. But anyway: Read the whole thing.