To add a new link, select "Custom Links" in the Site Admin Menu. Click Add New where you will see a field for Title and URL. The title will be the text you want people to see and the URL is the website you want to link. For example, to add a link that says "Drury Athletics" to let people get to http://www.drurypanthers.com, the process would look like this:

By default, any Links you add will be shown as a list in the bottom left corner of your site.

If you want to put other content here or you would like to feature your external links elsewhere on your site, you can use Widgets to customize the layout. Learn more about how to use the Links Widget in Using, Arranging and Changing Widgets.