First, an international drivers license, or at least the ability to drive. You might have to rent a car when you look for a room to live. Second, a credit card such as Master or Visa. If you get sick, and you need to visit a non-campus hospital, they will NOT treat you unless you show some proof that you can pay for it. Hard to believe but true.
Hospitals do accept credit cards, like most commercial establishments here.
So you get the idea of a suitable credit card limit. First, do what the University asks you to do. Orientations and so forth. Other than that, these are the thing you need to do. This is usually well documented in the orientation packet, so I will not discuss about it.