Moving to NYC is not that easy. adjusting to the climate, the feel, the speed and even the smog of the Big Apple can be quite tough. This is the very reason why you need to prepare and condition yourself mentally, physically, emotionally and best of all, financially.
First thing that you need to do would be to sell your car. You do not need a car in NYC and remember that space and parking here can be a real pain in the neck. Familiarize yourself with the subway instead as it will be your main lifeline while in the city. You can bring a bicycle or even a skateboard as it would be a convenient mode of transportation though it must be noted that there are a lot of cab in this city and there is a law that when inside the cab, the driver is obliged to take you to the place that is within the city limits of New York.
As you will do a lot of walking, it is best to get a backpack. You also need to acquire an umbrella as it will make you move faster, regardless of the weather. A good walking shoes would also be a perfect too that any person who is new to NYC can surely take advantage of.