What is missing while wading through all those 9/11 conspiracy websites is a portion of critical distance. 'You are either with us or with them'. But the world is not that simple. And there is a lot of bushshit information on both sites. So, to get some perspective I recommend reading some of this.
I specially recomment this one:
Debunking 911 - WTC 7
Do I know now what happened to WTC 7 on 9/11? No. But I know that there are people who are interested in finding out what happened on 9/11. Unlike the US government or senate. And that tells us a lot.