Pork Butts are the very most forgiving. I keep trying to ruin one, but as long as I slowly get to 190 degrees, they always work out. I've completely abandoned the practice of turning or flipping them. I don't do jack, and they turn out. Greatest thing for a beginner to do is to good a couple of butts using the "Minion Method" to light the smoker (just use that way every time anyway), and try not to overcompensate the vents...be subtle. Start wide open till you come to temp, then shut down two completely and keep one half open...check in an hour, and if the temp is holding at 225-245, go to sleep and check it 8 hours later. Pull at about 12-15 hrs. I don't even measure temp anymore...they're done after 15...just poke them to see if they're fall-apart soft.
Good luck.