How good are online universities?

Hi. I am thinking of taking online classes at an online university. I want to know if they are worth it?

I’m 17 years old and I have a almost 3 month old son. I just graduated and I had applied at 2 other schools in my town for college but now I was thinking of taking online classes. schools like University of Pheonix, or Kaplan university and those kinds of schools.

Are they well worth it?
I want to get a bachelors degree in business.

People who have taken classes in an online university, how was it?

How is to registration process?

Is it as good as taking classes in my town’s colleges?