Incidentally, if you're like me, and know nothing about stocks, but still want to get rich off companies you believe will succeed, I highly recommend Robinhood. It's like stock trading for chimpanzees. Install an app, fill out a brief profile, click a big shiny button to deposit money, select your stock, and click another big shiny button to buy.
I don't have any affiliation with them. I just always thought trading stocks was schleppily difficult, and was delighted to discover it was not so. I believe some company will do well; I'm not interested in understanding spreadsheets or hiring anyone; here's my money; how do I buy shares? What is the Uber-like, magic-button product here? Robinhood, it turns out.
https://www.robinhood.com/