If you're pretty new to this game, get one of the regulars from this site to give you a lesson on the basics first. I'm not going to go into any detail because as you're so "new", there's so much that I could talk about that I could be sitting here for the next 8 hours typing, and I have school tomorrow.

I can definitely help you out any time I'm on, although there are a few others who are slightly better than me and who are a little more experienced with handling new comers. Just send me a friend request and we can see where you're at.
My gamertag is "Ponked". Just include a messsage saying you're from halo forever.