Investing advice for 20 year old looking to learn?

I got a thousand dollars from my grandmother for Christmas and have been sitting on it, planning to invest it but waiting to pull the trigger until I have a concrete plan. My parents have a Schwab account for me with about 75k that their person manages and I considered just depositing the check, but I thought it would be a good learning opportunity to open up a new account just for this Christmas money and actively invest it myself.

For fun, I want to buy a bit of stock of the company I recently pitched (GTX), but other than that I'd be grateful for any advice on either specific companies or industries to invest in as well as strategies to research. I'm happy to take some risks given that at the end of the day it was a gift and net neutral if I lose it, but also not trying to play fast and loose. Thanks!!