How to set up my webcam as a security camera and monitor it on my iPhone?

I would like to keep an eye on my son while he is home a lone in he afternoon for the 2 hours before I get home from work (latch key) and dropped off by friend's parent.

How can I dial in and look and make sure he is doing his home work as he should be?

This is way too complex to answer here in a few paragraphs. Contact your local cable company (e.g. Comcast) or phone company (ATT or Verison) or security company (ADT) , they will set the whole thing up for you and explain how to use it.

http://www.majorgeeks.com/files/details/ispy.html
works great for me and free