By subway, take the #1 train to 103rd and walk north on Broadway, then east on 107th, or to 110th and walk south and east. You can also take the B or C to 110th Street and walk west on 109th, south on Amsterdam, then west on 107th. There are many buses that go north / south on Broadway. The cross street buses are the M4 on 110th, and the M116 at 106th. If you choose to drive, please consult one of the links above.
Public Transit: MTA NYC Transit