dunno if anyone's corrected everyone above yet or not, but don't grind/break up your weed real fine if you're goign to pack a bowl....more than likely (especially if you're new) all it's going to do is burn half a bowl in one hit and you'll cough it all out....waste, where as if you only break it up into 4 or 5 small peices of bud the bowl will last atleast over 15 hits. as for rolling, you don't want to turn it into a powder, but it needs to be pretty finely ground or it won't roll/burn right.