The crown has 3 positions. First, you unscrew the crown and it will slightly pop out. Wind it in a clockwise direction about 40 turns. This will power it up. You can't overwind it. Then, pull it out slightly to adjust the date. Turn it clockwise and it should adjust the date. Pull it out fully and it will adjust the hands (for hours and minutes). If you are going to set it today, I would set it for the 18th and then advance the hands past midnight. This way, the date will turn and you can set it properly so the date changes at midnight. Some people don't do that and the date changes at noon and they get very confused. It's fairly delicate but it should easily pull out to do this.