Many of us are probably already familiar with this website, but just in case...
http://www.obgyn.net/pcos/pcos.asp
Here's a sample article I found, written by Dr. Thatcher:
What is Polycystic Ovarian Syndrome (PCOS)? A Fact Sheet From The Center For Applied Reproductive Science by Samuel S. Thatcher, MD, PhD, F.A.C.O.G., USA.
OBGYN.net Editorial Advisor.
Director, The Center For Applied Reproductive Science.
This article explains the dimensions of PCOS without losing itself with jargon. It's a great introduction to his book "PCOS: The Hidden Epidemic" that I'm reading now (along with "The Insulin-Resistance Diet").
There's a whole lot more, this site is very informative!