Working on my beetle has been assisted by having several different manuals around, including the Muir book. I discovered another really great resource lately at "Bug Me Video".
The site has a whole series of videos (offered on DVD or VHS) on maintenance and repair of Volkswagens. I currently just have #1, General Maintenance. Since at some point, I need to take work on the brakes of my car, I will probably get the brake video, and probably the ones on wiring too.
It's not that anything in them is particularly profound, but since I've really never working on a car before, it's extremely valuable to me to have seen it done, even on video. It's all well and good to read the description of setting the timing, but seeing it done makes it much more clear, and will be very useful when I go to do it myself.