they're looking for something that has had an impact on you. pretty much they look for "at the tender age of 12, i was handed a book from my father which he thought would be a good read for a saturday afternoon. after reading 2 chapters of the book, many things in my life began to make sense to me. why i was treated the way i was. why blah blah blah. this book was "blah blah blah" by "blah blah"
after reading this book i realized that life wasn't as blah blah as i made it out to be."
go into a full on description of how your life was affected.
as for actual books... hmmm if this is a us private school, go for diversity/ethnic/religious books and how you felt about it.
or a book that said "welcome to ibm... and the world of computers"
i can't think of any actual books you can use though. if you wanna be cute and kiddie, there is "the giving tree" by shel silverstein. and "the lorax" by dr seuss.
