lets see... I've been reading books ever since I've been able to read and my mum read them to me before that... so I gotta think hard....
when I was your I read "Het wereldje van Beer Ligthart" by Jaap ter Haar, about a kid that turns blind because of a car accident. Very sad but also empowering book. It's a book by a dutch writer and I've read almost everything he wrote back then.
I don't really have a book for my early teens, since I was too busy writing myself, plus my obsession was wicca, so it would mostly be books in the esoteric sphere...
For my mid and late teens I've got a couple of books.
Junkies by Melvin Burgess, The outside of the book spoke to me so I took it and read it. Title explains the book
When love comes to town by Tom Lennon, about a young gay kid in Dublin. http://www.obrien.ie/book127.cfm
M