As in all walks of life, there are good workshops and less good ones, and those that promise a lot then deliver. And there are those that just totally rock. But they do seem harder and harder to find.
The Energy of Motion
The first technique I tried to master with my new lens when I started out, was the zoom/blur. The idea was to shoot a very slow shutter speed while zooming the lens while the shutter was open. It produced the coolest effects and I often did this for personal pictures but never professional work. That is, until I needed to change the energy of a picture.