When the flop is being dealt you should be looking at the other players faces and body language not at the flop. See if they make a facial expression that indicates strength or weakness or notice if they move toward grabbing their chips. If they reach towards chips they likely have a hand.
Additionally, players who look away from the flop generally have a strong hand. They want to seem disinterested so they look away. Players that stare at the flop often have nothing. Remember this is a game about reading people and you need to pay attention to the non-verbal cues if you want to be a winner.
This skill will also be a big help to you professionally. Sometimes you learn a lot more from actions than you do from words.