Hi Al,
I fly behind a Odyssey, which is the same as the voyager, but larger screen.
Here are a couple youtube videos that a distributor did that go over the basics:
https://www.youtube.com/watch?v=frgSRmrouqo
https://www.youtube.com/watch?v=33Q-v22DuiA
I don't know if you knew about it but you can also download the simulator to a windows PC to get familiar with the interface without sitting in the plane.
http://www.mglavionics.co.za/Odyssey2Updates.htm
There is also a user group forum over at
www.mglavionicsusers.org that would be worth looking around too.
For the most part I've been happy with my decision to go with MGL, but one downside is they're not quite plug-and-play straightforward as some of the other offerings and their documentation is pretty fragmented as you've seen. If you have specific questions I'd be happy to answer them as best I can.