I leave very early Tue morning to go to New York City to attend a training course set up by my firm (yes, the old dog can still learn a few new tricks). I will arrive at Newark Liberty airport, and I need to get right into Manhattan. I will take several trains to get there : Newark Airtrain shuttle to the Newark Airport station, the New Jersey Transit to Penn Station in Manhattan, and then the New York subway train to get me to two blocks of the hotel.