 I know Web design like static, dynamic, wordpress and joomla. I know about the module, plugins and others. I have one serious problem now in joomla. I can’t change the default ads here into the template. See the ads from below:
Your picture is Joomla default ads which included when you ran Joomla installation with sample data include. This ads actually the module default from sample data. You won't get this ads when you install without sample data when your ran installer before.
But you can remove this ads, because this actually module which implant in your site. Goto Extensions, select Module Manager, then find the Advertisement module in there. Make it Unpublish or you can delete this module
Another way, you can change the content of this advertisements. Goto Component, select Banner then pick Banners, so you can change the ads content with your own ads.
This link will explain more to you, so I hope this can help you
