These documents may be opened directly in your web browser by clicking on them if you have the appropriate helper application installed (Adobe Acrobat in the case of PDF documents). You may then select the appropriate option from that application to save the document to your hard disc. If you do not have Adobe Acrobat Reader, it may be obtained, free of charge, by clicking on the button to the right.
Some documents are supplied as Microsoft Word documents which facilitate them being filled out and printed. Word is a popular word-processor format but there is, unfortunately, no free version. If you do not have Word and wish to open and amend Word documents, you should download and install OpenOffice by clicking on the button to the right.