I believe certain skill books are meant to be found only. For instance - whirlwind is in the basement in one of the abandoned houses nw outside cyseal- the house that has the ghost that summons the bubble you have to smash in 20 seconds to test your strength. (at least it was for me, it might be randomized)
the wolf spell I found the skill book in the underground area looking for the white witch.
The burning ....something - the fire spell that fires 2 fire bolts instead of the 1 bolt you get from the flare spell was in the room with braccus rex(sp).
I havent found dust devil yet or walk in shadows. I have a feeling there are 1-2 spells from each school that are only available as a found book.
In beta there was an earth spell that fired a boulder from your guy in a straight line and everything it hit along the way got knocked down. I dont know if its still in the game as a find somewhere or it was replaced with the boulder that falls from the sky and hits everything in a small radius. Im still looking for that one as well.
