Just upload the PDF files to the post pr page you are writing. This "attaches" them to that ost inside wordpress.
Then you insert the link in the post with the buttons WP gives you when you upload - just like an image.
These forums were CLOSED to new posts on November 19th, 2012. New forums are here: http://www.studiopress.com/forums/
and you will need to SIGN UP AGAIN.
If you need assitance with setting up your theme, go to http://my.studiopress.com/
and read the SETUP links or the TUTORIALS link on the side tab.
If you need Account Assistance
, file a help desk ticket at the same location.