When you buy stocks of a given listed company, what you are doing is buying a portion of that company. In buying, you are expecting that a company is going to do well in the newer future. For instance if you buy a $50 dollar stock, you will want to be able to sell it off at say, $60 in two months. That's one way of profiting from stock trading. Not just in divends, but I'm buying and selling as well.

The stock investment is one of the easiest and safest ways of making profit in our times. You just have to buy stocks from a new and promoting company from which you will receive dividends (daily, weekly, monthly, yearly) which also means a long term-profit. If the dividends are not the thing that attract you, you can also sell these shares for the best price. Some companies's shares price raise with like 500%, that means a lot of money.
But that job is not that easy. You can't just buy shares from a random company and then sell them. That company need to be selected by the criterias you learned before going into that domain. That's what you gotta do before starting that business. You can't just venture like and idiot in something you never did before, you may lose all your money even form the beginning.