Thanks for all the info everybody! It sounds like I'm headed towards the kindle. I've read your comments and done some further research and it looks like the kindles system of sharing books is pretty intuitive. I'm assuming it's still something like how it's explained in this article:
http://mickwest.com/2008/03/22/shari...-does-it-work/
And I like the idea of my dad using a keyboard rather than a d-pad to search for books. Sorry kobo! Thanks again everybody!