There's a new freebie from the new 'After Effects Apprentice' video training series on Lynda.com by Chris and Trish Meyer. The video is introductory, of course, but some of us may have overlooked the use of "Temporary Tools" in AE, which was also introduced in Creating Motion Graphics Hidden Gems: Chapter 3 - Basic Animation.
The technique does not work with all tools; for more, see Activating tools (keyboard shortcuts) in AE Help. Here's the video:
While we're here, Steve Holmes also has some intro tips on the subject too: