The main difference between the plans is the choice of provider. If you know of a specific physician, or like the idea of having medical care close to where you live, then pay close attention to the provider's listed with each plan. The benefits office is very helpful in sorting out the various health plans. Ask the consultant on duty for help in this procedure. You will have to supply a PIN number, which the consultants can help you obtain.
New students are eligible to get an advance on their paycheck.
Otherwise, your initial paycheck will not arrive until October 1. You cannot be paid until you have a Social Security Number. This way you get to meet the faculty and the senior graduate students. Do some outdoor things in the limited amount of sunshine that we have left at this time of year. Go to the lakefront and rollerblade, etc., etc.