This short (2:43) video will introduce you to the discussion forum as a means to communicate with others in your class as well as your instructor.
Note: This video would be made specific for Ecto Learning's discussion forum in "real life." It's currently for another system, but the basic idea is the same, so I'm "borrowing."
Ezracenter (n.d.). Dicussion forum. Retrieved from http://www.youtube.com/watch?v=X4sJ_NHyY6Y