Below is a list of list-servs and in-person parenting groups. They are divided by geographic location and subject area. These groups are often a first-stop for advice, meet-ups, and getting great used baby gear. So sign up and get yourself plugged in to your neighborhood network!
Garden Moms: An online resource for posting questions about parenting, as well as a large (and very active) classified sections. I reccomend signing up for the daily digest emails of both lists to get all the information in two emails a day.
Jewish Parents (Being of Jewish Faith Not Required)