Small Steps by Louis Sachar

Two years after being released from Camp Green Lake, Armpit is home in Austin, Texas, trying to turn his life around. But it’s hard when you have a record, and everyone expects the worst from you. The only person who believes in him is Ginny, his 10-year old disabled neighbor. Together, they are learning to take small steps. And he seems to be on the right path, until X-Ray, a buddy from Camp Green Lake, comes up with a get-rich-quick scheme. This leads to a chance encounter with teen pop sensation, Kaira DeLeon, and suddenly his life spins out of control, with only one thing for certain.

 He’ll never be the same again.