As your one year senior, I must tell you to relax. Freshman year isn't all that bad. From what I remember, it starts up like the work you had towards the end of 8th grade, and slowly becomes harder and more difficult, but that is to be expected. You have plenty of time to get to your classes, so you don't have to rush. Some older punks might try to mess with ya, but don't let them get to you. The main thing to remember is to relax. If you feel nervous, talk to your counselor or a teacher you feel comfortable with, and you can let them help you through the nervousness.