Please do not say ebay. We have a lot of books and cds that need to go. Also, can you sell things on amazon.com???
Find out if your town has an online yard sale. Once you sign up is free to post items. Look into any larger communities near you to find sites like these. This is how the one from where I live looks like: http://funadvice.com/r/15osb776678
Craigslist! Ebay, Amazon
Ebay and Etsy,com