You can sell items at auction sites, like Ebay.com. You can sell items at Amazon.com.
I have just started my own online business also, in the last 2 weeks. Visit www.makemoney.bombealaska.com this is the link I used to create my own website I found the service fast, excellent, low cost and professional. Also they are linked with some of the major players in online selling. Check out the site I created with them which sells all cooking needs www.bombealaska.com
To avoid scams you are best advised to start your own internet business which can be set up and run for almost nothing.How much you make from it, however, will depend on your effort commitment