Jane is trusted by many an author and she explains POV well:
I never tire of going over this type of thing; it's the writer's staple.
The Basics of Point of View for Fiction Writers | Jane Friedman
Writer Joseph Bates explains all the point-of-view options for your novel and how to choose the best point of view for your narrative.
www.janefriedman.com
I never tire of going over this type of thing; it's the writer's staple.