Remove the door panel off of the affected door. The window motor should be under the panel. Simply replace the window motor and the problem should be fixed.
First make sure that you didn't accidentally lock the windows. Since no windows will go up you will need to determine is if it is the fuse or the switch. Figure out witch it is and replace it.
First make sure the car runs and has power. Then check the fuses. If all fuses are fine, then take apart the panels on the door until you get to the actuator. This part may be burned out and need to be changed.