For learning to link turns, you'll want to have about 65% of your weight on your front foot. Nose forward, and as your board begins to point down the fall line (don't panic when you feel a slight rush of acceleration), kick your back foot out on its uphill edge.
For carving, there is no kicking your foot out or skidding, and you need some degree of speed. Carving, essentially, involves pressuring the board into reverse camber and riding the edge as if it were a linear track. As you complete one carve, you initiate a direction change with a weight shift to your downhill edge. The transition from one edge to the other is seemless and a graceful trenched arc is left in the snow.