I moved to NYC a few years ago, and studied urban planning at NYU. Since moving here, I've spent an inordinate amount of time walking around different areas of the five boroughs (and am still nowhere near to seeing the entire place!). Some friends of mine and I have started a website to try and help the average person understand what cities are about and how they are put together. Also to help NYC'ers learn more about their city. There's a lot of fascinating things here that guide books just don't cover.
Nice to meet you guys.
The Urban New Yorker