There are tons of junk books in the game. I want to make some use of them and make a plugin for DUST, to give the player a chance to get some XP or improve his skills, since there are no quest. The easiest way is to create some craftable skill books and they would require 1 undamaged book or, let's say, 20 damaged and a certain perk. There are 12 variants in the game, 4 small ruined books, 4 large ruined books and 4 undamaged. Craftable books would work like vanilla skill books: you "eat" them and you get a permanent effect, except it would take effect only the first time you read the book. Once you know the contents, you get no bonus for reading another copy of the book.
Any tips how to do this? Maybe some sort of hidden perks?