I've been playing around with robinhood with my project money for the past couple months, so I'll follow along on this thread to try to garner some advice and tips from those of you who are much more knowledgeable in this stuff than I am.
You can lose a lotta money really fast without some basic rules, and a buncha discipline.
I would strongly suggest a "practice" account avail at most brokers, so you can pretend buy/sell till you get the hang of it.
There should be an "education" section at your broker or other site.
Sit on your hands and read.
Cash preservation is primary rule.
Look up "stop-loss" and other methods to mitigate loss.
There are many styles of trading, lotta folks use "options", not my forte, but worth looking at.
Keep in touch.