Happy Belated Birthday!
To be perfectly honest, I would buy a cheap ($5k) car for your first car until you get enough experience to know what the STUPIDEST thing is other drivers can possibly do. Give it about 2 years - as I've been driving for 12 years now and people STILL amaze me with their stupidity behind the wheel. Then once you know how to react to other people driving like morons, THEN you can drop some cash on a bad@ss ride.