The stock trading is one of the most profitable domain in our times.
You can get a lot of money but you can also lose all in just a couple of seconds. That's why I recommend you to learn something about that business. You need to learn because you can't just venture into something which you never practiced before, you have no chances if you are doing like that.
That domain is growing at every moment what means that is very profitable. A lot of people already practice it.
For that domain you need to be very careful and pragmatic. Don't let anything surprise you. You have to be a step in front every time. Learn, that's what you gotta do before you start.

Shares are appreciating assets. When you buy company shares, you are anticipating that the company will appreciate in value, meaning that the shares you hold will also increase in value. When your their value increases, you can then choose to go ahead and sell the percantage you hold for profit. Another way you can benefit is through receiving dividends from the company, in that you could be looking at long at long term investment where by instead of selling your shares, you instead buy more shares so you receive more dividends. There's a disadvantage though with stock trading; even if you did good research, sometimes companies depreciate in value leading to losses. One of the most common scenarios is if a company declares bankruptcy, that suddenly makes every stock held with the company loose value.