New Yorkers are much nicer than people give them credit for
In the future, when someone says they are from NYC, I'll understand that that does not necessarily mean Manhattan.
Clothes are so much more important in the city: not the style but the functionality. People are more subject to the elements and there is a lot more walking. So good quality shoes are essential and having the right clothes and accessories for the weather are much more important (i.e. Rain coats & boots)
The subway isn't as strange and mysterious as it seems at first - in fact it's much less stressful and kind of relaxing once you know what to expect.
If you are going to Lower Manhattan from Brooklyn with kids - it's easier to take a smaller stroller and not worry about accessible stations ('cause there aren't many)