I read the Mitford series and lived them. They made a great impact on my life. It is about an episcable,sorry I don't know how to spell, priest and his wife and life in a small town. It is a great series. It went through our community and I sent it to my daughter.
I absolutely LOVE these volume of books called "Questions Yong People Ask..Answers that Work"! They're not preachy, and they have questions through every chapter to help deal with your problems and find solutions to them in accord with the Bible. Check them out!
If you are looking for some fictional writing, then Ted Dekker would be a good author to dive into. If you are looking for ways to get closer to God then look for teen devotional books. As I myself have done. I am actually reading a devotional bible right now and it helps me read the bible everyday, but Ted Dekker would definitely be the one to go to if you are not looking for that.