You can link to another site within your content, or you can link to pages within your site by using the Hyperlink Manager.  This is useful if information is on another page and you would like to link to it rather than duplicate the information.

This is useful if you would like to have an image on your site and link to another site or to another page on your site.  This is also useful for email links from the images.

This feature is useful if you have a lot of information on a page and want to click on a link at the top of the page and it go directly to the information that is further down the page.  This is also useful for Back to Top links at the bottom of pages.