To upload the.pdf: Go to cPanel (Control Panel) (if you need help finding cPanel watch
this)
Under the Files heading, you should see File Manager or Legacy File Manager. Click and you will get a pop-up. Go to webroot for the proper domain (directory). File Manager should open.
About 2 inches down from the top of the screen, you should see Upload Files - click on that. You get another screen reading 'Please select files to upload...'. Click on Browse and locate on your computer the .pdf.
Click whether you want to overwrite an old file or not (probably not relevant now but may be in the future if you update the pdf),
Click Upload. The file will be uploaded to your directory.
Exit cPanel.
When you create a link to the pdf file, link it just as you would to another page except use the name of the pdf such as:
http://www.mydomain.com/35page.pdf
using, of course, the name of the pdf file instead of what I used for the name.
That should get it.