Anybody cared for preemies or "micro preemies"?

Yes my first son was born at 26wks but he had a severe brain bleed and died when he was 3 days old. So while i got a small bit of NICU experience i haven't had any with older preemies who made it through the first few months. (my second son was born at 34wks but had no problems). It's really good to hear so many babies do so well after they get a bit older. Hopefully i'll be talking to his sw today to see if she thinks we're a good match.