Read other resources.
My favorite point of view books are Characters, Emotion and Viewpoint by Nancy Kress, The Power of Point of View by Alicia Rasley, and Characters and Viewpoint by Orson Scott Card.
There are also several online articles available. If you Google “point of view” and “writing” you’ll come up with a bunch. Here are a few to get you started:
http://www.gailmartin.com/tips.htm#Seeing (short and to the point)