Headlights and taillights not working?

What kind of car do you have? Most cars have a fuse box some where on the driver side of the car, that is where your problem most likely lies. Go see if you can find it and if you can find a spare fuse of the type that is for your lights. If you cannot find it try looking up where it is on google. Make sure to note what type of fuses are were before you remove them.