Here is the method I use:
On the server, in the same location as your website files create a folder,
name it downloads
Upload your pdf files into the downloads folder
Samples:
tires.pdf
wheels.pdf
maps.pdf
tickets.pdf
On your webpage create the links, i.e.,
Available files are:
Tires
Wheels
Maps
Tickets
Now to creates the links:
With your mouse gather the word Tires and select Insert from the tool bar,
then select Hyperlink and a window opens
In the box type /downloads/tires.pdf
OK
Now go on to Wheels, Maps and Tickets.
Upload the new webpages and then test the links by accessing the site.