1. Go into content, select "site content"
2. Select "manage files"
3. Upload new file, search for desired PDF
4. Once the file is added mouse over the file until you see the magnifying glass show up, click on the magnifying glass and it will open the file.
5. Copy the URL of the file, close window with PDFs
6. Add a New Page "URL page" which consist of naming the new page and copying the URL of the file where requested
7. Delete old file, drag new page to desired position
8. For sub-menus, pull new page in line with other sub-menu tabs