Skill Books reward you with Skill Bonuses in Elder Scrolls V Skyrim. Each Skill has its own Skill Books, which you will find throughout Skyrim. You only need to read these books to gain an instant level increases. You don’t need to steal these, just opening them once, will do the trick.
Yes, there is also an achievement for reading 50 Skill Books, so if you are aiming for that, following brief directions given below to find and read all these Skill Books.
We don’t care whether you want to earn the achievement or you want to level up your skills, you will find below skill books for all 18 skills that you can learn in the game.