Hi Janet – sorry to hear this is causing difficulty.
If you go to this topic: “SPT PDF downloads” https://www.talkphysics.org/groups/1178/forums/3363 , you should see a series of hyperlinks, for instance you can click on “SPT: Electricity and energy topic (112.9 Mb)”.
That will download for you a “zip” file which contains all the PDF files. You’ll need some software, such as WinZip or IZArc to “unzip” these files – http://office.microsoft.com/en-us/help/zip-or-unzip-a-file-HA001127690.aspx .
Please let us know how you get on.