When you come out of the Lincoln Tunnel from NJ, keep to your left, as if you're heading uptown toward 42nd Street. The lot entrance is on your extreme right. It may appear to be a bus entrance, but cars can use ti too. If you miss it, make a quick right on 38th Street and another quick right into the lot. Once your on the ramp, make sure you follow the signs for cars. In other words, avoid the 'busses only' ramps.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson