Highlight and Copy (Control>C) the web site address you want to use as a link.
{Web site graphic showing highlighted URL}
In Outlook, type your message, and (1) highlight the words you'd like to link. Click on the (2) Insert Tab, and then select (3) "Hyperlink".
{Graphic showing how to highlight text and insert hyperlink}
Paste the URL (web address) you copied into the "Address" field at the bottom of the screen and click "OK".
{Screen shot of address field}
You'll now see your linked text in your email.
{Linked Text image}