Share the google video, Loose Change Final Cut. That's the easiest to understand video that I've seen to date on understanding what happened that day. Also have people look at Architects and Engineers for truth website.
http://www.ae911truth.org/
It's important to keep this alive, even though the ones who have kept the truth from public knowledge has been somewhat successful until now, they will not win if we continue to seek the revealing of the truth and justice.