All forms etc. are in Adobe Acrobat or PDF format and are downloadable.

Firstly - make sure you have installed Adobe Acrobat reader available here.

Still having trouble? Some browsers struggle with PDF documents.

Try this: instead of just clicking on the link, place your mouse pointer over the link and click with the RIGHT button. 

A menu will pop up - select "save target as" and you will download a copy of the document to your computer. Make sure you remember where you put it!