Finally, the rest of the fan.

Like in the last two steps, wipe down the rotor and the area surrounding it on the fan. After cleaning, be sure to completely dry the fan with a cloth or towel before using it.

For further cleaning, spray compressed air into the fan to help free the area surrounding the motor of debris and thus improve the longevity of the fan.

Voila! Your fan should be (almost) as good as new! Be sure to repeat this often for proper fan maintenance (once every one or two weeks should suffice, depending on your fan usage).