Downloading PDF files is no different from downloading other files.
Of course, you'll need Adobe Reader (or something similar) to be able to "view" the PDF file, after you have downloaded it. Access: http://www.adobe.com to access the download Adobe Reader 9.3 for Windows.
Answers & Comments
Sometimes the browser will attempt to open the PDF file via a viewer. You can right click on the PDF link and save as to save the PDF locally.
What problem are you facing?
Downloading PDF files is no different from downloading other files.
Of course, you'll need Adobe Reader (or something similar) to be able to "view" the PDF file, after you have downloaded it. Access: http://www.adobe.com to access the download Adobe Reader 9.3 for Windows.