I would agree that eBay would be a good place to start and that using something like PayPal is a good, secure way to accept payment.
Setting up your own website is also not hard to do. There are places that will host your website for free. Please click on the following search.
Free Website - Google Search
Just be sure to read everything very carefully about what they offer and do.
I do know someone who made their entire living for a number of months by selling things on eBay. It does work.