Welcome to EpicSki--and to skiing--Robbbbbb!
If you search the archives here, you'll find that this topic has been discussed a LOT!
My advice, in brief, is not to worry about which foot you "should" be standing on, and learn to balance on either or both. In real skiing, you'll find plenty of times when you'll need that skill!
There was a time when the more pressure we could get on a ski the better (it made the ski bend more and perform kind of like our skis today perform with much less work), so it made sense to focus on skiing entirely on one ski all the time, with a distinct weight transfer from turn to turn.
There are still a number of reasons why we usually ski with most of our weight on the outside ski of the turn, but it is less critical these days. For the most part, I don't even worry about which foot bears the most weight. Normally, if I let them, the forces of the turn will pull me toward my outside ski, just as they pull you toward the outside when you turn in a car. It would take work to fight against that, so go ahead and let your weight shift to the outside ski. Practice balancing on it so that you are confident and capable when the forces pull you there.
Balancing on the outside ski still has several advantages. It takes work to avoid it, for one thing. The outside leg is biomechanically in a better position to withstand the forces of the turn than the inside leg. And it keeps the inside leg and ski available as a backup, should the outside ski slip away a little (or a lot).
But don't get in too much of a rush to move to that outside ski. If you try to transfer weight to the other ski without the aid of the forces that pull you there, it will require you to make movements that will disrupt that smooth, effortless, sensuous flow from turn to turn that is the mark of the expert skier. Especially at lower speeds, where the forces of the turn are less, it may take some time in each turn for the weight to shift to the outside ski. Be patient!
And don't panic if you do get some weight on that inside ski. It carves as well as the other ski! If you learn to tip and guide that ski accurately, it will be able to take over as much of the load as needed to help continue the turn. If the outside ski slips a little on ice, the inside ski is right there to help. If you're skiing powder, with both skis in, rather than on the snow, the pressure will be more even, without you needing to change your movements.
Most importantly, like I said, don't get too caught up in trying to shift your weight to the uphill ski to start a new turn, especially at low speeds, as that movement will surely produce an unwanted glitch in your smooth transitions from turn to turn.