You can add "attachments" to your course.
Attachments are addendums or supplementary materials that can be added to your course. They can either be documents (Word Doc, PDF) or links to a web page.
Find the course that you'd like to add an attachments to. On right hand side, in the Actions box, you'll see an option to edit your course, click on the link.
1) On the left hand side of the page, scroll down to the Attachments, and click on the tab.
2) You can add a file or a link