If you can post ads on Free websites (Craigslist or Backpage for example), then you can do this. The fact that you are on this site reading this right now means you have the qualifications to do this.
 

HERE IS WHAT YOU NEED TO GET STARTED:

A PayPal or Alertpay Account.  If you do not have one, you can get one for FREE at http://www.paypal.com or http://www.alertpay.com . 

Note:  Be sure to get a verified account so you can send and receive money.

$20.00
 

About 20 minutes a day to work your business.

HERE IS A SCREENSHOT OF PAYMENTS THAT I'VE RECEIVED IN A 2 DAY PERIOD WITH THESE ADS.