I Need High Speed Internet For 3 Months - What are my options.

Hey I'm a college a student and I live in Queens, New York. I need my own personal internet connection (for gaming, The Verge, etc) for the next 3 months and maybe sporadically down the road (whenever I come home from summer break).

What are my options? I've never purchased internet service on my own so are there long contracts or can I pay as I go? PS the only providers that are available in my area are Dish and Time Warner.