These two videos are the best examples of Dr. Kwon’s method to learn what I think are the fundamentals of an efficient and consistent golf swing: an active back swing, continuous motion, using the legs for a vertical rhythm, a mature back swing, and letting it go.  Golf is not about trying to hit the ball.
Dr. Kwon rope drill
Dr. Kwon club swing

This video of Bobby Jones showing how the end of the grip pushes against the left little finger to let the back swing mature.  This also shows how relaxed the little fingers must be in order to allow the wrists to flex.
Bobby Jones using the fingers

This video of Tom Watson’s secret to the golf swing shows Dr. Kwon’s method on how to start the down swing by keeping the arms in front of the body and letting it go.
Tom Watson Secret

This video of Kyle Birkshire showing how to get more distance shows Dr. Kwon’s method of using an active, vertical back swing motion, continuous motion, using the legs for a vertical rhythm, a mature back swing, and letting it go.
Kyle Birkshire Improve Distance

In this video of Kyle Birkshire’s swing, notice how Kyle has the patience to let the back swing mature even though the back swing and down swing are just blurs.  The majority of the time taken for Kyle’s swing is used to let the back swing mature.
Kyle Birkshire Swing

Finally, this video of Tiger at 2 years old showing Dr. Kwon’s method of an active back swing, continuous motion, using the legs for a vertical rhythm, a mature back swing, and letting it go  Amazing!
Tiger Woods at 2 years old