Really? If I know a series, I like to go in prepared. Then again I jumped into Fallout 3 (my first fallout) by the seat of my pants.
I don't want to get caught up in the hype too much, I did with Oblivion and that turned out to be a mistake.
It's a good game but after all the hype it was disappointing. If I hadn't followed it as much it wouldn't have bothered me.
I'd rather play the game and see 'Hey cool, it has this NPC/Faction/Quest/Feature, that's nice!' than 'Hey, it has this NPC/Faction/Quest/Feature, just as they said in the interviews!'.