Well, in case you don't have it installed already, you've either never heard of PDF's (portable document format) or you are such a power user that you opted for another pdf reader. What I'm trying to convey here is that Adobe Reader is such a common program that you might even have it installed without knowing. I'm terribly sorry, I didn't mean to upset Windows 8 users more than they already are. Writing about Adobe Reader is like writing about Start button to a Window user.
That made me think about the situation I was in. Upon starting to write about Adobe Reader, I checked to see if I did not already have the latest version installed. However, if you are looking for other versions, below is a list of all the major versions of Adobe Reader: The download button above will allow you to download Adobe Reader 11, an older version (that still works fine).