The Magic Master
Every copy of Ni no Kuni: Shikkoku no Madōshi comes packaged with a copy of The Magic Master.
This is a 352 page hard cover book which is a replication of the book used by Oliver in the game world. The book is necessary to play the game and has all the required information needed for unlocking spells and recipes. Also included is a bestiary and maps. You can also find some lore such as fairy tales which contain clues on some of the games puzzles.
The book was a major advertising focal point for the game.
 PS3 Version
From the official site, a series of manzai comedy style videos confirm that the PS3 version of the game will include a digital version of the book and not a physical copy.