Sometimes your range isn't even important depending on the player type. If everyone's folded and you're at the button then a 3BB bet will either let you steal the blinds or you'll get a call. If they genuinely have a good hand you may get a re-raise. If they call you, then watch how they bet, it can tell you all that you need to know. A decently sized C-bet usually does the trick in most cases depending on the player type and their stats. If you get a re-raise pre-flop depending on the size I'd usually call and watch how much they bet on the flop.
But it ALL depends on the type of player you have to your left and their stats, how often they see the flop, how often they C-bet etc. Position is important but it becomes more powerful when you know what type of player they are. If they are a recreational player, then you got the upper-hand and will probably take their chips/$ over time.