There are many books for adolescents with Aspergers, if you contact the National Autistic Society they will send you a free brochure and reading lists.
However, here are a few,
Aspects of Aspergers:success in the teens and twenties by Maude Brown And Alex Miller.Alex wrote this with her grandmother, it offers practical advice on living with Aspergers,including dealing with money, romance and daily living skills.
Revealing the hidden social code( social stories for older children and adults) by Marie Howley and Eileen Arnold.
How to be yourself in a world that's different:an Asperger syndrome study guide for adolescents by Yuko Yoshida.
For a full list of books, and to order online go to www.autism.org.uk/pubs/teenagers.