You can search for sites using the search box on the toolbar or you can use the Site Finder to get more detailed site information.
From the search results you can navigate to a site, join or leave sites, and delete a site (managers only).
A list of sites matching your criteria is shown. This list includes public sites, moderated public sites, sites you created, and private sites that you belong to. To the right of a site, the actions Join and Request to Join indicate you are not a site member; the action Leave indicates you are a site member.