How can I Make a path for Camera ?

I want to make a cinematic cutscene which the camera followes the player through specific points which zoom in at some parts and zoom out at others.

Is there any tutorial to accomplish this or anyone can help me doing that?

For free: You can animate any property of a game object. Open the Animation view, create a new animation, and add a curve to move the camera.

Paid: Use a cutscene editor such as uSequencer or Aperture.