the get-together from the last couple of years have been great sources of information and, more importantly, great contacts.
I guess most members don't realize how much activity is going on between forum members and that is done thanks to meeting the right people.
Diane Kennedy's blogs have been very good sources of info.
About real estate and specifically apartment buildings, there are a couple of newsletter I subscribe to that help a lot. Maybe I should also subscribe to Vollucci's newsletter.