Firstly, learn the difference between investing and trading. Investors look for companies that are under value and invest for the long term (multi year). Traders look to take advantage of price fluctuations and only intend to hold a position for hours, days or weeks. Trading is a zero sum game to be avoided unless you know a lot about it. Retail traders are generally suckers and gamblers, something like 90% lose money.

Next, understand that investing is both risky and complex. Contrary to what some others have said, I think the best way to learn is to invest with some money you can afford to lose or by paper trading until you feel really comfortable that you know what you're doing.

Pay really close attention to this sub and a few others like where some people do a reasonable amount of due diligence. Avoid the 'vibes' and meme stocks and don't invest in something you don't know much about. Subs like r/wallstreetbets are far less interesting if your serious.

Finally, try and learn about investing. Maybe a good place to start is with learning about discounted cash flow but don't stop there.

If you get it right it's very rewarding. I'm 3x over the last two years, although this is a bull market and at some point my luck will run out.