As I’ve stated before, Izzy Video is one of the best resources I have come across in regards to learning digital video techniques. Izzy Video is not free (it’s about $45 USD for a 6 month subscription), but Izzy does release a few free videos from time-to-time. The latest free video outlines the basics of using a green screen in video production. As usual, it is very well done and informative.
And, if you have missed it, I highly recommend taking a look at Matthew Needleman’s K12Online Conference presentation, “Kicking it Up a Notch Film School For Video Podcasters“. This is an excellent overview of the procedures and techniques you should know to get started with video in the classroom. Matthew has done a wonderful job of making this presentation equally informative and entertaining.