Like the other Elder Scroll games, Skyrim is full of cheese when it comes to leveling. I'm not concerned about mob difficulty, so much as screwing up questing. Will leveling fast block the character from getting quests or mess up quest lines' progression order?
Also, without reading a full walkthrough, is there a quest order that should be followed to do all of the quests in the game? For example, I'm guessing there might be contract assassinations that would kill key quest NPCs, if done out of sequence. Not looking for full spoilers, so much as a general guideline for doing all of the quests.