>>5931057A few ways. You can flip stuff by buying low and selling high. Can do that with physical items (like on eBay) or virtual crap(like cryptocoins). You can buy things in bulk then divide them In smaller portions and sell those smaller portions for a higher price per gram then what you bought it for.
You can also do affiliate marketing where you don't sell your own Thing but you convince people to buy someone else's product and they give you a cut of the sales that you refer.
You can also sell software (write an app and sell it for 99 cents)
Or you can make free apps and put ads in them and get paid for each person that clicks on the ad or even just sees it. Your helping sell someone elses product not your own and you get a cut Basically