[Stealth Prawn]
Dont try to raise skills just to have them high! Let them rise naturally, as you progress through the game! If you're worried about having a low Marksman skill becuase you dont use it as often as youre other skills, find a trainer!
i'm going to have to agree
the low level trainer is in bruma in one of the shops i think
the mid level trainer is out side skingrad(sp)
and i have yet to find the master trainer but i hear you'll need an elven bow to get her to train you