Using my first generation Ipad as an Ereader
I was recently given a first generation ipad to use as an ereader. I have been trying to download apps so that I can read epubs and pdfs on the ipad but nothing seems to be working. It keeps saying that I need to update my iOS but the one that I on the ipad is as high as the first gen will go. Even going from my laptop to the ipad doesn't work. What apps could I download to read epubs? How do I get my ipad to work?
iPad, iOS 5.1.1