Which Point of View Should I Use? A Tour of First, Second, Third, and More

I often get this question in my classes:  what point of view is best for my book?  Who is best to tell this story?  What are the differences between first, second, third, and omniscient points of view?

There's an underlying confusion about "voice" and point of view in story, which I want to address first.   

Point of view in writing is not your belief ab…