Pages is designed to open to the front page for the course, if there is a front page selected. To select a page from the Pages Index, click the View All Pages button.
Click the title of the page you want to edit.
Click the Edit button.
Insert PDF Link
In the Rich Content Editor, place your cursor where you wish to insert the PDF document.
In the Content Selector, click the Files tab.
Click the Upload a new file link.
Click the Choose File or Browse button.
Click the document you want to upload  and click the Open button .
Click the Folder drop-down menu and choose where you would like to store the file.
Click the Upload button.
View PDF Link
Look in the Rich Content Editor to be sure that the file was properly inserted where you left your cursor. If you look closely you will see the file name flash yellow the moment it is inserted in the page.