Hi! I'm Forrest! Welcome to the SAMB!
Now, it's best to pick a nickname that DESCRIBES you, so you don't want to change it later, so list a couple things you like and I'll help you pick one out. There's a lot on other SAMBers here, too, which although adding the prospect of possibly lowering your choice of nicknames, can also help you here.
This community is mostly friendly, and you'll notice a lot of awesome topics and threads for roleplays, stories, random mundane events, ETC.
I hope this was helpful, however vague, and I wish you the best of luck in this community! (Sorry if this sounds like I was talking to a little kid, I just don't know if you have any experience on message boards or anything. XD)