To view the files just click on the links and to download these files, firstly you have to right-click on the link and click on the option Save Target As from the drop down menu and seva them in separate folders as topics. The files are in Power Point format so you will need power point to view these files, if you do not have power point you can still view these files by installing Poer Point Viewer from Microsoft which is free, press the following link to visit the page: