The best DVX book on the market would be Barry Greens book that you can get from the market section on this web site.
It is so good that Panasonic included it with the camera for a while...maybe they still do?
I don't know how much he goes over exposure and stuff like that. After knowing what buttons do what setting the exposure is just like any other camera. Use the zebras if you are questioning your eye.
I am a big fan of barry Greens book. So much so that I have two copies. One stays in the office and the other with the camera. It serves as an excellent resource on "how" things work on the DVX.
A similar book that dealt with the "why" you would use such settings/set ups would make for a nice companion. I realize the value in learning it on your own but see how an "expert" does what they do would be helpful.