Trying to find where you can edit the general site meta data like descriptions or title tags, that are some of the basic building blocks of SEO.
This is where you can update your site meta description, site meta keywords, robots and so on.
Note that individual pages can override the meta data by settings found with the menu.
To edit the meta data of a page please follow the following steps.
Now you will be able to edit the meta-data of a single page in Joomla.