Oghma infinium. My current characters bio is that he was hermanus moras champion that was blackmailed and banned from his realm. Now he has to earn back his honor in order to get back into his beloved realm apocrypha. To follow the build, my character has a complete, and organized library in all of his hearthfire homes, and carries the oghma infinium with him everywhere.
By the way, i think that in the dragonborn dlc, you are going to get to travel to apocrypha, because if you watch the trailer, a lot of the backgrounds seem to be made up of books, and hermanus mora is the daedric lord of knowledge so, ya think about that.