Jfranco,
As for learning trading, I didn't get started until beyond 30. By then I had degrees in economics and accounting, followed by a decade of experience in a highly-analytical field. I jumped right into trading, and after a period of initial luck, I became a consistent loser. I then began to take trading seriously, and a couple years later figured out some things that work for me.
I'm certain that all prior experiences shaped who I am, and how I developed my trading. But I don't think what I learned in university, or what I did in my prior profession, was essential learning for a trader.
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Now, a suggestion to you, you're a teenager about to begin University. Time is on your side. Of course, focus on your studies. But just as important, make as many genuine friends and connections as you can. Enjoy your youth as it's a one-time deal, and if done right, that experience can be worth more than any $ amount you'll make from your future profession. You've professed interest in trading from a young age, so continue to study price behavior and test your ideas. The markets aren't going anywhere and if you're persistent then in due time, you'll learn enough to be ready. Even if you have to learn alone.