Do You Know What to Do on the Defensive End?

I am interested in training for the lateral slide you see on the defensive end in baskeble. I would first go talk to a really strong, defensive minded coach and find out. The head should be literally just like a if you had some magic kind of motion picture camera,. You know, you'd be able to videotape the entire thing. In the head would never lose that quietness instead of being like this.