I only use guides (on the internet, or off if a family member happens to own one, I don't buy them myself) if I'm at loss and have no idea how to advance (this can ruin game experience, too, imo). Otherwise I wouldn't because a lot of aspects of the game can be spoiled while reading through a guide. Yeah, some guides are said to be "spoiler free", but for some even what to do after they've gotten past the "hard part" is sort of a "spoiler". For games I'm anticipating I don't even like to see previews...