LEFT MEANS LEFT
Put one hand on the bottom of the steering wheel. Keep it there. This is the secret to backing up a trailer. The reason is that the trailer goes in the opposite direction of the front wheels, so once your hand is in position at the bottom of the wheel, moving it to the left makes your tires go to the right and the trailer to the left. Move your hand to the right, and your tires go to the left; your trailer, to the right. Simple, right?