Well I don't speak for myself or everyone else here. However in larger cities such as New York and Los Angeles it isn't unheard of to have people who have never been behind the wheel in their entire life. Why drive and deal with the massive traffic headaches when you have various means of mass transit or could walk everywhere?
With that being said grats on it bro. I've had mine for about eight years now. The best advice I can give may seem like common sense but it's scary how many people don't do this:
Don't text and drive!!!!!
Seriously it's really starting to become a massive problem. Mainly just make sure you follow the traffic laws, use your turn signals, ect. As long as you are careful and don't do anything stupid then really the only issue on the road will be everyone else
Also for your first car don't worry about it if it isn't the prettiest thing on the road. Get something you can live with that goes from point A to point B. Something that's affordable.