Bringing experts into your classroom via video conferencing can be an excellent enhancement to your students' learning experiences. Video conferencing can also be used to connect classrooms in a 21st century version of penpal exchanges.
Weekend in the Live of an ipad Even tho I found it a little slow I really like the idea: how I use my ipad in my everyday life.
Would be a great place for newbie users to start.
"BigBlueButton is an open source project that is built on over fourteen open source components to create an integrated web conferencing system that runs on mac, unix, or PC computers. In the true sense of open source, we invite you to try out and participate in our project."