Tomes are typically a little harder to get so you would need help. They are also variable in terms of practices you need to use to practice from them, how many times you can practice from them ect.
for example: one of my cleric spells, major heal, is a tome.
Tome was obtainable with 2-3 of the higher level characters and I practiced it at 2 pracs = 20% of the skill. I think it took like 3 tomes to max the skill at 99 %
I think since Ive talked to you a bit that you are a warrior (correct me if im wrong). There is a skill on a tome for u to get at some point =) Something to look foward to
Hope this helps ya!
cheers