Since it took ages to scroll through the crafting menu because of all the mods I installed, I was thinking about a solution to clean up the crafting menu. The solution is an additional crafting book for every weapon which you need to have in your inventory when you want to craft the specific item. Simply remove the books from your inventory and nothing will show up in your crafting menu. This way you can easily declutter your crafting menu. All crafting books will automatically added into your inventory when you run this mod for the first time. This happens with a little quest (without any additional scrips) which runs only once. I did my best to create pleasing crafting books. Every book contains useful information to craft the item. I plan to add this feature bit by bit to all my existing mods.

Why did I add the books direktly to the player's inventory? Well, what are the alternatives?
- Adding them directly to the inventory of merchants for selling. Possible, but it is not a good modders practice and would cause incompatibilities. Every mod which
  alters merchant's inventory would be incompatible.
- Adding them to merchant's levelled lists for selling. Possible, but I don't know a possibility that items always appear in the merchants inventory this way. That's why
  this possibility is out of question.
- Adding them to the world so that you have to search them. Possible and most immersive but it would cause incompatibilities with every mod which alters the place
  where the specific book is located. Compatibility patches will be needed for all those mods.

I want my mods as compatible as possible. So I decided to add the books directly to the players inventory. It is the best way in my opinion and causes no problems. You can always remove the books from your inventory and store them somewhere.