For learning to conduct, there now is an app for iPhone and Android.
The app is suitable for both choir and orchestra conductors and it is interesting for
beginner musicians as well as more advanced.
With this app you can learn the patterns for the different time signatures
and learn to use the left hand to indicate actions like cuing and cutting off.
Because the patterns are shown as animations
instead of the usual static diagrams, you will learn to show the right kind
of rebound in your movements.