New York City is one of those places that seems to exist in several dimensions at once. It’s the city you’ve seen in movies, the place where everyone appears to be in a hurry, and the destination where you can spend an entire afternoon exploring one neighborhood and still feel like you’ve barely scratched the surface. Between the famous landmarks, restaurants, shopping, and people watching, there’s enough to keep a visitor busy for weeks. But before I start daydreaming about skyscrapers and pizza, I like to begin with the practical details. Getting there, figuring out how to see the major…