I have no idea if what I'm wanting to do is possible, but I'd like to setup some kind of eBook library on our network, so we can buy site licensed Excercise Books and Novels, then allow users to access them from any device they choose, such as iPads, phones laptops etc as well as eBook readers like the Kindle.

This must be possible as it's such an obvious idea and would save us tons in reprographics costs as well as making life much easier for everyone.

Any ideas?