Follow in this order: main or power window fuse blown, ignition switch faulty, wiring or ground faulty.
Only 1 power window does not function: power window main switch faulty, power window switch faulty, power window motor faulty, window lock switch faulty, wiring or grounding faulty.
In order to check these components you will need, a volt/ohm meter, an inexpensive one can be purchased for about $ 20, make sure the meter can test continuity too, some give continuity reading by a light, a buzzer, a needle deflection on a meter analog guage, i prefer the buzzer. and a 12v test light, this costs about $20 too.
Source: Chilton service manual