Skill book

Skill books are special items which increase the player character's skills when used. Unlike those of skill magazines, the effects of skill books are permanent.

Related perks
Comprehension (Fallout 2, Fallout 3, Fallout: New Vegas, Fallout Tactics): Increases the skill point gain by 33% (New Vegas), 50% (Fallout 2 and Tactics), or 100% (Fallout 3).