I'm in the exact same boat. Picked the phone up last night and have a whole host of questions. I'm coming from a blackberry so both Android and touch screens are new to me.
So far so good but it's frustrating because I know there are things that i can do, I just don't know how to do them.
For instance, on my blackberry when I had a facebook notification the facebook icon had a red star on it. S3 doesn't seem to do that and I can't seem to find a setting to make the happen. (same goes for email)
Or...how do I turn off sound notifications for just email (I get too many to hear the noise every time).