How should I manage states in jME3? I have seen a few things referring to AppState (I think that is correct) but I cannot find any documentation about this. Could someone please point me in the right direction. Thanks.
The AppStates are for making different states (MainMenu, Game, InGameMenu).
You find a small example in the jME tests:
jme3test.app.state/TestAppStates
You should use AbstractAppState for the differents states in your game.
I hope this helps.