Tourist etiquette: Do's and Dont's of NYC

Check out How Not To Act Like a Tourist in NYC. Otherwise, you might just get whacked on the back of the head. Some other useful advice can be found at Newyorkology and nymag visitor guide.  Above all else know how to walk:  Do NOT walk slow, stop in the middle of the sidewalk to look at your guide book or to pose for a picture. Walk to the edge of the sidewalk if you must stop. If you do these things, you might be trampled alive. Having said that, enjoy your stay in NYC!