The Experimental Aircraft Association
(EAA) website publishes "Hints for Homebuilders" video clips, with some useful how-to building information and introductory info on tools, etc.
Though some of these videos are a little too Sonex-centric (they're neighbors with EAA headquarters in Oshkosh) a lot of the information also applies to building a Zenith:
Here's a sample:
EAA's "Hints for Homebuilders" Video Clips Website
. You can also submit
your own videos to EAA to share with other builders.
If you're building a Zenith, HomebuiltHelp.com
's full series of step-by-step how-to videos can be of great help. I've heard many builders claim that the time they've saved because of the videos makes buying the DVDs from HomebuiltHelp a real bargain.