I'm new to buying books on itunes. My question is: If I buy a book on itunes site (Store), is that book only for the person that ordered it. Can it be shared with the rest of the families tablets. My family isn't to consistent with their tablets, we have an Ipad, a Kobo and a Samsung. Would I be able to share it with all these tablets? If not where would one buy a book that can be shared? Thank you.