ZIP Files: You need WINZIP, 7zip or any equivalent program to unzip the files from this archive onto your hard drive. If you don't have any ZIP extractor programs, you can download it at 7zip.org and install on to your computer.

PDF Files: You can simply view any PDF file in Adobe Acrobat Reader. If this program is not available on your computer, you can download the free program at: https://get.adobe.com/reader/

AVI Files: AVI is a popular container file format used for watching standard definition video on the PC and is the container used by DivX video versions 3 through 6.  If this program is not available on your computer, you can download the free program at: http://www.divx.com/en/software/technologies/avi