Find the cheapest, just barely working, vehicle you can buy.
When you are just starting to learn how to drive you don't want to buy a car you actually like because you may damage it.
My first car was a 1991 Chevy APV mini van.
Had over 260k miles when I got it, could hardly go past 70, didn't like going up hills faster than 45 miles an hour, paint was faded, you name it, it didn't function like it should.
I got it for free since a family friend was moving and had no use for it since it just sat outside.
Dad and I got it running and I had some enjoyable times with it.
Since it was a piece of crap, I abused it.
Burn outs, driving through fields, jumping it, drifting in my drive way, spray painted on it, put stickers on it, good times.
I sure didn't get any chicks with it but it got me where I wanted to go and taught me how to drive.
Now I drive a 2005 GMC Envoy with leather seats, Bose system in it, sun roof, the works.
As a kid, you're going to do irresponsible things in your car and you may as well do it in a car that is already on its last legs anyways.
Just my two cents.