NJ Transit train from Newark Penn Station to New York Penn Station
PATH train from Newark to World Trade Center or Midtown via Hoboken/Journal Square
Amtrak from Newark Penn Station to New York Penn Station
Bus from Newark to Port Authority Bus Terminal
Taxi or rideshare via I-95 or Holland Tunnel
Drive via I-95, NJ Turnpike, or Lincoln Tunnel
Newark Airport AirTrain to NJ Transit or Amtrak, then train to Manhattan
Ferry from nearby terminals if connecting from Jersey City or Hoboken