Screen Recording Using QuickTime
How to record a narrated Google Slideshow using QuickTime
Keynote Editing
How to produce a high quality narrated Keynote Video file
iMovie Editing
How to Export an iMovie File as a "File"
Picture in Picture
Green & Blue Screen
Animate graphics
Precision Editor: continuity editing (scene transitions), audio advance and audio delay
Clip overlays (how to clone yourself)
Cinematic edits
PhotoBooth
How to use PhotoBooth to use a Green Screen