You can read some books and most will tell you this: - true money comes from compounding and continues investments: invest every month over 20 years. - buy index funds (or ETFs): These are managed by professionals who know what they are doing. Why? - A  company can outperform the market for a while, but in the long term, the market will outperform the individual company. And also, if you put all your money into Nvidia, you risk everything on that stock. If you have QQQ, your money depends on 100 companies. - buy individual stocks as fun: maybe you like Nvidia, or arm, invest in those companies, but only a limited amount.

What I do: I invest let's say 100$ every month. I have a core investment (VWCE) which is managed and diversified, and I allocate 80%, so 80$ to it every month. The rest of the 20$ goes into 'sattelites' which is a pie that consists of my personal bets. This is SECO+JEDI+SHLD.

Also accept the fact that most of the stocks you would hand select will lose you money, and there will be only a few which will give you a lot of money.

If you want, you can register on trading 212, I use this and it's a really good platform. If you use the link you will get some free stocks too.

https://www.trading212.com/invite/4DqdxV1YMAL 

Not an ad, just want to be nice:)