The Nov 2012 issue of EDUCAUSE Review has a couple of nice articles looking at screencasting, specifically how they can be used to enhance the "flipped classroom". Both are by Michael F. Ruffini, an Associate Professor of Educational Technology at Bloomsburg University of Pennsylvania.
Screencasting to Engage Learning is the one that ties the concept into the flipped classroom, and Creating a PowerPoint Screencast Using Camtasia Studio provides a nice walkthrough for the novice screencaster. While this one would work well as a printout to follow along, I found it slightly ironic there wasn't a screencast of his process. Maybe I just missed it though...
Finally, as a library-related bonus, Chad Boeninger had a brief piece in the Nov 2012 issue of Elsevier's Library Connect, Tips for creating and sharing instructional videos.