How to tie a man's tie in a half Windsor knot

Half Windsor - Start with the broad end hanging further down on the right. Pass the broad end over the narrower end. Pass the broader end under the narrow end. Then pull the broad end over the knot and down toward your body through the loop that has been formed. Now take the broad end and pass it around the half knot. Pass the broad end up from below and behind the knot and through the loop around your neck. Pull the broad end underneath the outer layer of the knot.
Carefully adjust the knot, holding it gently and pulling the narrower end. The broader end of the necktie should now hang down further than the narrow end.