There are tons of ways to run your own business online. If you are lucky enough to have a great product people will want to purchase, then you can just set up your website and work on marketing it to get visitors and potential buyers. If you do not have a product, then you can purchase items at flea markets and sell them on eBay or find a reputable drop shipping company to work with. Drop shipping companies allow you to list their products on eBay and they will ship the product directly to your buyer. You keep the difference between the actual wholesale cost and what the buyer paid. Drop shipping can be difficult if you do not know what you are doing because certain products can actually cause you to lose money or make such a small profit margin that it is not worth the effort.