First train yourself wrestiling small things. Once your strenght and agility go up with all that work-out, grab a sword and slap the shit out of everything with the sword's flat side. I usually slap bears on their tails or front paws. If it's too boring, set up a macro. Also, lie on the ground while doing it. The bear will get more attacks in, so you'll train shield user while blocking those, and by being on the ground you avoid getting charged.
Doing that I've reached legendary swordman in a day, with superior agility and strenght. (at character creation, get yourself superior endurance and some willpower. I usually roll heroes, so I max endurance and get above average willpower, that's all I need)
Once all that's done, try to see just how much faster and stronger you can get. I read that there's a limit based on your starting stats.
Once you reach the limit, go to a temple and topple a statue (save first, so if you don't get vampire at the first try you can try again. You'll know you're a vampire because all the people you can't directly see will appear as a red dot. Yes, you're seeing their warm blood. Wonder if it works on cold bloded things like reptiles and such....)
Anyway, by now you should be one though vampire swordman. You never get tired, you're super fast, strong and feel no pain. And you drink blood. And becoming a necromancer doesn't take away that kind of thirst.
Have FUN!