I bought a used iPad for my elderly mom who will use it to read books (eyesight issues). It has many books and the seller said I could sync them. How do I do this as I don't have his account (obviously?). I want to keep those books and be able to buy her new ones. 3P software on a computer with no iTunes account? (I have an iPhone so have an account, but don't want to lose my stuff). Any advice welcome. thanks