Videos produced for the online learning site Lynda.com offer a good introduction to editing. They feature the Adobe Premiere editing program, but the principles apply no matter what software you use.
In the text, we mentioned the use of J-cuts to transition from one location to another. Here's the video explaining how that works.
Screencast: Creating Interactive Graphics
Free apps like Tableau Public have made it easy for any journalist to create interactive graphics. This tutorial explains how.