If you could only learn one technique with the three section staff
This would be your best option. Not only does it make a nice spinning movement which is fun to watch and good coordination training, but this is one of the best grip configurations for using the three section staff as an actual weapon. I use this technique (not as a continuous spin) all the time in sparring. It still utilizes the momentum and unpredictability of a sectioned weapon, but the security of having a blocking/attacking weapon in the front hand.
So if you are ever interested in learning the three section staff as a practical weapon, start here:
That's it... that's the real secret. This is your best technique.