The backhand stroke is executed from the opposite side of your forehand stroke. Thus, if you are a right-handed player, you hit the ball from the left side of your body. If you are a left-handed player, you hit the ball from the right side of your body.
To correctly execute the backhand stroke, you must bring back you dominant hand or racket hand around your body before you hit the ball.
The tennis backhand stroke can be awkward to execute in the beginning. But if you are diligent to familiarize and practice it regularly, it can be a very good additional tool for you tennis skills and techniques.