First, realize that everyone there has a job to do, and that you have no medical skills. So, you may end up standing around a lot. Or maybe they'll have some standard tasks for you, like transporting patients. So, you need to initiate. Find a friendly resident and ask them if you can tag along with them. If they say yes, then here will be your opportunities to do things. Maybe you'll hand them instruments when they're doing minor procedures, etc. I had a resident let me put a few stitches into someone's scalp. The laceration went through to the skull and I nearly passed out looking at it. And he had me stick this syringe into the wound and flush it out with an antiseptic, so all this stuff was coming out of the gash. Well, anyway, it was a cool brief opportunity. You should see some cool things and maybe do some stuff too. Be friendly, be enthusiastic, and be politely assertive.