Here are links that you may find interesting.

National Koach - The national Koach website, provided by the USCJ. Find out what Koach programs are doing nationwide.

Columbia Hillel - The Hillel site at Columbia. Keep up to date on events happening on the Columbia/Barnard campus, and how you can get involved.

Hillel - The national Hillel website. There are many things to explore on this website.