All of the template packages available for download at The Write Score are placed in .zip files (ZIP on Wikipedia). You will need to unpack its contents to access the enclosed files.
Most computer operating systems have built-in software that allow users to unpack zip files. Mac users can just double-click the archive. Windows users can use the right-click context menu and choose Extract All.
We also searched for “how to extract a zip file” and liked these two results the most: Zip Files, How to Unzip a File.
Be sure to backup the files for safe keeping.