Welcome! I would suggest visiting the daily thread and joining in the conversation. Tips, hits, and other general advice is shared there and it's also the best place to ask specific questions. It can be overwhelming when you first start turking so that would be my first piece of advice.
Hello, I'm a newb too. Well...a newb to this forum/website I've used mturk for awhile. I just did it enough to figure it out which is the only way for me...hands on. Anyway, have fun with it.