No matter where you are on your rollercoaster ride, the more you know the better you feel.  Here are some sites for general info about prematurity.

websites with info
The March of Dimes  is an organization that helps fight birth defects. Their campaign for healthy babies promotes pre-natal education and care.  The website has lots of info and a parent support group.
A parent’s website about preemie statistics  based on personal experience.
Information about the NICU experience
Research  on the long-term effects of prematurity
A Primer on Preemies 
Info  on Preemie development
Info on follow-ups on preemies expected to have developmental delays
Developmental milestones also by Emory University

 
Online articles
University of Chicago Magazine article about neonatology.
CBS (AP) article on premature birth