setting camera for VR app

Hi everyone, I’m developing a vr app in UE, and I’m trying to understan how works camera and player controller.
I need a camera that follows his parent object (That is animates along a path) and only I want to control his rotation with the headset(or the mouse) but I am so confused between player start, player controller, camera, camera actor ecc. Can someone aexplain me how to do this?