How do you sell something?

Depends on what it is. There are very many specified online stores such as antique guns, minatures, Ball jars, and such. Many online websites offer the option of creating your own online eStore. But if you want an online store, use Ebay ( ebay.com ). If you want to secure your personal information and finance, use the free PayPal. It help send money to the buyer of your product through your credit card, debit card, checking and savings account. WikiAnswers is not a site that allows sales of items.