Changing an ad

I just placed an ad, but forgot something in the title. I went to My Classifieds and saw no way to edit the ad. I know people add 'pending' to their ads, so there must be a way, but not obvious to me.

If you open the ad in My Classifieds then you should see an edit in the bars above the ad. That will allow you to edit the ad. I am not sure if there may be a 24 hour delay before you can do that though.