Many players feel the heel of the clubface leads going back. As they come into the ball, the heel of the clubface leads into their swing arc.
Dropping your right foot back gets your right hip out of the way and makes it easier to hit balls on the range and the course.
Instincts used in other sports, such as the transition, can be applied in golf. Like other sports, the golf swing is a movement pattern and a constant motion.
The most popular grip is resting your left index finger on top of your right fingers. Do not interlock your fingers.