For the most up-to-date information, visit the law library open to the public next door:

Supreme Court Law Library, Courthouse, 9th floor
111 Dr. Martin Luther King Jr. Blvd.
White Plains, NY 10601
9 AM – 5 PM, Monday – Friday
(914) 824-5660 (phone)

For a complete description of their many resources and services, see:
nycourts.gov

Other helpful websites include:

nycourthelp.gov
Includes DIY legal forms and helpful tips on self-representation.

lawhelpny.org
Legal information for New Yorkers who cannot afford an attorney.

New York State Legislature
Includes updated Consolidated Laws of New York and information on the State Legislature.

findlaw.com
Includes clear summaries of New York laws, legal forms, and the FindLaw Lawyer Directory.