Thinking of giving this a shot. Finally!

Badminton Service

http://www.youtube.com/watch?v=ORyqSRzf7VY#t=244

When you serve high, weight shifts from left foot -> right foot -> left foot. The hit is in the second transition.

When you receive a service, extend both arms high ahead. Chest shouldn't be facing opponent. Duck before going for the hit.

Badminton Footwork

When going forward, forehand or backhand: first step with left leg, second step with right leg. When coming back, don't reverse the steps. Instead, shuffle backward.

Same for going to sides, forehand or backhand.

Backward:
When going to right: Take a step with right leg, shuffle all the way, keep the weight on the right leg. Return by simply running back.
When going to left: Take a step with your left leg, then lunge with right leg, shuffle. Keep weight on left leg. Reverse the steps to come back.