Want to learn square dance, can not distinguish between left and right, do not know the online video is into the mirror image, or is not the mirror image?

Looking at the video to learn the dance left and right, then, mainly to see the video inside the person with you in the direction of what is not the same place, if he is with you in the direction of your then, you have to according to it in the opposite direction to learn, but if he is back to you, then it means that your direction and his direction is the same, so you can be directly based on his role to judge.