I've found a couple of web communities that have been growing fast and have been a good source for interaction and learning.
Revit Society was started by Daniel P, to focus on Revit and learn from others. Daniel being in the structural world, there may be less people to tap into than there are in the architectural world. The website has grown and has many many members. What I've liked is the international community joining in and connecting with each other. So far there are people asking questions, posting video tutorials to help each other out, there's even an area set up for students. Daniel started the website, with blank forum page, magazine page, groups page, but members have started creating in each area and it's been a great source for me to see what else is out there. I hope you visit and join.
BIM Fusion is not Revit specific but all about BIM. Their forums area does break things down by industry and program, it's a great setup. There are also areas for videos, blogs, events and groups to setup.
Both websites provide a chat area for members.
BIMable.com is a neat website also; this one is all about providing information about BIM. I like to check it out once in a while to see what news there is related to BIM and my industry. It's nice to have it all in one place!
I wanted to share these web sites I've found as they have been a great find. I hope you find them useful also.