How many of you are familiar with Autodesk's Exchange Website.
...Autodesk describes it as a community featuring training, AutoCAD user support, tips and tricks, tutorials, videos, discussion groups, and CAD manager best practices...
I call it a great resource. It's a great way to stay up to date, post questions, share your work, talk to experts in your field and even laugh a bit with the CAD Cartoons (which personally it's my favorite). When you first land on the page you can either view it as a one stop shop for all things AutoCAD or select a view to just show info in your particular field.
Either way it's a great way to stay up to date. Give it a try. It's FREE, and you all know how I like FREE.