The conference will be held at the Courant Institute of Mathematical Sciences at New York University, 251 Mercer St, New York NY 10012.
More specific directions about how to get to the conference hall by plane/train/automobile are available on the Courant Institute website.
New York is an expensive city. As students we are always on a budget and the best solution would be to find a place to sleep for free with on top meeting new people. Couchsurfing is the solution. We have created a Couchsurf group to facilitate attendees for the 2011 Free Culture conference in finding an accommodation. Couchsurfing is an excellent way to meet new local people, have a place to crash for free and learning about a place from the eyes of people who live there. The mentality of this community closely reflects the ideas and ideals behind Free Culture, because sharing is caring.
The Couchsurfing group for SFC NYC is here
There are also various sites that list affordable hostels in the area: