Try WPAdverts as a site visitor. You can take yourself through the submitting classified process and also browse and manage existing ads.
Remember this is a bare-bones installation and things can look a LOT different with different themes – and WPAdverts is guaranteed to work with ANY proper WordPress theme!
Check out the behind-the-scenes back end of Adverts through the eyes of the webmaster.
Use the username/password combination: user/user to login to the site’s WP admin panel.