First turn your fan on and figure out if it going clockwise or counter clockwise.
Step2
In the Summer Time run it counter clockwise when looking up at the fan. The air should be coming down on you.
Step3
If it is Winter Time the fan should be going in a clockwise motion to make the air rise, spread it to down the walls. A lot of people don't use their fan in the winter. You could save a lot of money doing this.
Tips & Warnings
Be careful, if the fan is too high be careful and make sure you have someone home to help you.