How do you get from PortAuthority in NYC to Roselle Park NJ?

Take the 113 bus. The schedule is at: http://www.njtransit.com/pdf/bus/T0113.pdf Also, you can take the Raritan Valley Line to Newark Penn Station for either the North Jersey Coast Line or Northeast Corridor Line, or the PATH subway line. On the North Jersey Coast Line or Northeast Corridor Line, go to Penn Station and either walk, or take a bus or subway to 42nd Street (1 stop by either the 1/2/3 trains or A/C/E trains. If you take the PATH, take the train to Grove Street for the train to 33rd Street, and either walk or take the bus or subway to 42nd Street. If you choose to stay on the PATH train, go to the World Trade Center station for the 2 or 3 trains to 42nd Street.