To clear up the "wizard book" discussion a little - hopefully...
The physical book is literally the same as the in-game book.
There are few (can't actually think of any off the top of my head) occasions which require the player to use it. I'd say you could complete the game's main story only looking at the digital book twice, maybe less.
Crafting is the main use of the book, as the recipes are laid out in the real-book, so you can just sit looking through it, whereas you have to find the pages/recipes as you progress otherwise. Same for the spells, part of the story is that you have to find the pages of the book as you progress. Again though, even with crafting, it's an optional part of the game, there are a few tutorial style bits where you'll be told "go look in your book for this recipe", but it's no hardship.
Likewise, there are some optional quests that have a new language, that language is in the book so solving the puzzles/deciphering the language is easier with a physical book, but it's not hard with the in-game book, because you can zoom in and out at will, turn pages etc. It's really not a big deal.