Choosing the correct lie:
Lie is the angle that the hosel of the iron makes with the rest of the iron head. Generally, each iron has a hosel (this is the part of the iron that connects with the shaft) that projects out from the clubhead at standard lie. By adjusting the hosel the lie of the club (or the angle that the hosel forms with the rest of the iron head) can be altered to better fit a player's physical characteristics.
Shorter players generally prefer a flatter lie (the hosel bent down) to adjust for the fact that their arms are closer to the ground. Taller players generally prefer a more upright lie (the hosel bent up) to help them adjust for their arms and torso being higher up.
Use the chart below to help you make your decision: