I have the latest version of iBooks on my Mac, iPad and iPhone. I also have many iBooks that were not purchased from the iTunes store. Is it possible to sync these books across all my devices using iCloud? If so, how do I do this? Basically when I add a book to iBooks on my Mac, I want it to automatically show up on my iPad and my iPhone. This happens automatically for iTunes purchases, but I'm wondering if there is any way to do this for books that are not purchased from iTunes. Thanks very much in advance to anybody who can answer this question for me. Cheers!