AR magazine content

Hi there: I am trying to design an app for a magazine. How do you detect all the pages? How do you store all the content and how can the app recognize more than 1 image at a time without having to design different applications. Also, how can you create a list of content for instance magazine #1 will load different content than Magazine #2 Also, how to allow users to integrate Faecebook and take a screen shot and share it? How many images can be integrated into one dataset? Thank you a lot. B