Great question. Was going to ask the same. There is no app for everything. lol.. Interacting with humans & learning the theories on emotions and behavior (ref

Great question. Was going to ask the same. There is no app for everything. lol.. Interacting with humans & learning the theories on emotions and behavior (ref Dr Paul Ekman) is a far better direction in becoming a great manager/leader. And then obviously the responsibilities that go with management that any company should be able to provide in few days of training.