Point of View is something writers need to be aware of. I've heard the "rules" but the more I read the more I realize we can write however we want if it's done well. By well, I mean everything from clear to engaging.
Here's some types of POV.
Omniscient: Like God. The writer tells the reader things the character couldn't possibly know, so it's an all-knowing type of point of view.
Third person: Using the pronouns "she" or "he". Sensory details, thoughts, etc. are experienced through one character's pov at a time.
Second person: Using the pronoun "you". I don't see this very often.
First person: Using "I".
Those are all extremely simple examples from me. For better details, check out this article at Fiction Factor.
What POV do you write in? Which are you most comfortable using? What genre is your favorite to read, and what POV is the norm for that genre?