The other side of the relationship is your beardie's trust in you - that you will give the correct command at the correct time. There is not a lot of equipment needed to train herding. While a shepherd's crook looks wonderful, it is very heavy for training purposes and if your dog runs into it, the dog could be injured. A flat buckle collar that will not slip over the dog's head is needed as well as a 15 - 20 foot woven training line. The long line should be used only by someone who knows how to handle it since long lines can become tangled and cause injury to dog, sheep or handler.
Some trainers also train the dog to respond to a whistle.
A common plastic whistle will do. Oh yes, you also need sheep and a field. Usually the outrun is a semi-circular or pear shaped path. This command is considered a reprimand. It should be an absolute call off.