Click Links in the NavBar (do not confuse the Links link in the NavBar with the User Links widget; any link you post from within that widget is visible only to the Instructor/Designer or TA/Designer.)
If you haven't yet created a category for the link, click New
Category (top) , enter the Category name and optional description, and click Save.
To create a link, click New Link (top).
Choose the category and enter the link title, the URL, and a short description (optional) of the web site.
Click Save.
To preview how these links will appear to students, click Preview.