Generally no. I'll look up the game mechanics or learn the math sometimes behind certain games but I won't follow any sort of walkthrough unless I've already beaten the game on my own, to find anything I've missed. That is if the game warrants a replay. The only time I've looked up a guide was either if I had left a game for several months and have become lost or if I'm so shit out of luck that I'm close to growing 10 feet, turning green and causing millions in property damage.. I personally consider it cheating. I have a former friend who follows guides right from the beginning, with just about every game he plays even if it's relatively easy, and will follow the guide as he's playing. What the fuck is the point then? He even argues that it's not cheating, that it's merely playing the game properly and drives me nuts. He's a Douche bag anyways.
Also Deja Vu once again.