Welcome aboard.
Just because I had to wait until I was 44 to get my first Zed, doesn't mean you have to. I agree with the other sticks in the mud though. My first car was a Mazda 1500 (a well ahead of it's time Italian designed sports sedan). It was a great car that I seemed to touch park occasionally enough, that had it been a hand restored Zed I would still be crying. My brother's first car was a '59 MGA that had bits stolen from it on a regular basis and the only way he could stop the thefts was to right it off on a valiant!
My advice would be, as already suggested, to find a relatively cheap car (RWD of course) to endure all those little mishaps that follow young drivers around (including Police!!). So long as you can keep that other great expense (girls) out of your life (wallet) for a while, then you would be better off to drive a Zed in your 20's.
None of this stops you from starting a project sooner (parents tend to get in the way of this plan), but not ideal as a daily drive.
In the meantime, your skills and knowledge will grow from the many very experienced members on this forum. Once you get to know a few of the blokes near to you, then you may be able to hone your skills working on their cars (obviously under the eagles eyes of the owners).
This is just my opinion. Good luck and welcome again.
MaygZ