Craigslist my ad?
Go on Craig's list n just hit post add
Should be pretty straightforward. Here's some info you need help http://www.craigslist.org/about/help/how_to_post
Just beware, craigslist is infested with scams. I listed a car and 11, yes eleven replies saying "I want the car. give me your bank account and routing numbers so I can put the money in your account." Yeah, right