I've been watching the Accordance Training DVD lately. The videos are well done and I'd recommend them to new and old users alike.
However, I prefer to watch videos in fullscreen mode, utilizing the screen real estate my beautiful iMac grants me. So, don't forget you can search out each file in turn and open them in Quicktime and view as full screen.
But who wants that hassle? So to make it easier, I whipped up this little utility app:
Just pop your DVD in (or copy the movie files to your hard drive), and run the app. It presents you with a simple Table of contents and a click (or arrow key and return) to view the chapter you select, in beautiful FULL SCREEN no less.