Hey Rachel! I'm Sarah and I'm a TeenHelp Buddy - which basically means I help new users feel comfortable around the site and answer any questions you may have. It's a pretty cool place but it can be confusing at first, until you learn your way around! A good starting point, though, is definitely the Arrivals & Departures Forum (click me!). That's where you can introduce yourself to other members and check out some of the great guides to getting the most out of the forums. Another thing to check out is the Chatroom - it's fast-paced sometimes but everyone here is super friendly and welcoming, that's one of the best ways to make new friends and meet new people around here.
Anyway, let me know if you need anything. Take care and hope to see you around.