The NYU Tel Aviv Staff are very helpful with this - Upon Arrival they will grant you a Rav-Kav Bus Card, Which allows you to ride any bus within the city. they will help you to locate the nearest bus stops. The best way to get around Tel Aviv is by bus. The standard fare is NIS 5.60 ($1.40), with an additional half shekel to get to and from outlying areas.
You can get some great student discounts in Tel Aviv, so bring your ISIC card with you when you travel!
Check out restaurants and outdoor markets where you can pick up just about anything you might want. Locate the nearest bus stops.
Head outside and pick up whatever supplies you'll want, as well as anything you might have forgotten at home.
This seems obvious, but for some reason people forget. Just do it.