To add onto what SSH is saying, while you don't need to intentionally add weight to the outside ski, while learning it doesn't necessarily hurt to do so by focusing on lightening the inside ski. This can have some benefits in preventing you from over powering your outside ski by twisting your foot into the turn too much, which can make rounded turns difficult to ski.
By balancing on the outside ski you are going to feel more stable on the snow as you learn to tip the skis and let them turn you instead of you forcing the skis to turn.
As you progress to higher level skiing, you can stop intentionally moving the weight to the outside ski and let the turn dynamics naturally cause pressure to transfer to it. Try playing with the difference on snow. Using big round turns at a medium speed on flatter terrain can help you to let it all happen instead of forcing it.