Myself I am like guru. I like to figure things out for myself. But since I am new to the game I like to be as informed as I can be. So for the sake of other players I like to watch videos and learn as much as I can before going into a dungeon. I like that I get to see everything, trash, bosses, switches. I have watched many walkthroughs before where they skip the trash, then the trash kills me only to find out that there is something that the trash mob does that I needed to know.
Know when it comes down to do it. After I have done the dungeon a few times although it may be fun for me. I just want to get through it, so I don’t mind skipping mobs at that point.