To find the URL of a page, first load the page in your browser. The easiest way to do this is by clicking "View Website" from your admin, and then navigating to the page you want to hyperlink to. Once you have found the page, copy the URL that appears in the address toolbar at the top of the browser. The URL usually looks like this: http://mydomain.com/home.html. This is exactly what you want to paste into the "Link URL" field when creating a hyperlink.