I don't know enough about where your at currently to suggest converting (i'm not even orthodox either) but here is what I wished I had done when I was your age.
1. Practice the basics: reading the bible, following a prayer rule, avoid indulging in food, entertainment, internet, etc . . .
2. Attend worship and get involved with people, form intergenerational relationships if possible
3. Serve others in your daily life (in school, work, home) and find more outlets to do so (volunteering, etc).
4. Understand it's a long haul and that you've probably not exhausted all the frustrations and challenges of adolescence.