Capcom released today the official guide book of the Monster Hunter Stories Nintendo 3DS game. In the book you will find all the weapons, monsters and item information includes with some fields information from the game.
The price of the book is 1600 Yen + tax and it is 496 pages long (full colored, A5 size). The first printed version of the book includes a DL code which unlocks a Rathalos EGG for the game. It should be noted that you can use the code until November 13, 2017.
You can buy the book from here: http://ebten.jp/p/9784047331884/