There's a well-regarded 3rd party book on the GH2 ...

Rocky Nook, Inc. (http://www.rockynook.com/book/0/218/the-panasonic-lumix-dmc-gh2.html)

...and I've just ordered a GH3. Do you think a lot of the book would be applicable, or not much?

Regarding general photography techniques, yes. Otherwise it will be hit and miss as many of the functions are arranged differently or implemented differently. Personally I would wait for a GH3 specific book.

It would have to be a publisher other than Rocky Nook. Their editor just told me they don't anticipate updating the GH2 book.

There's a well-regarded 3rd party book on the GH2 ...

Rocky Nook, Inc. (http://www.rockynook.com/book/0/218/the-panasonic-lumix-dmc-gh2.html)

...and I've just ordered a GH3. Do you think a lot of the book would be applicable, or not much?

If you have an Ipad/Iphone you can download a sample from the Itunes library.

I have a GH3 and didn't own a GH2, so I am also looking for some reference material.

I have that manual and it's a good starter book for the GH2. Many of the details are not useful, especially the image settings, for the GH3.

Have you read both manuals? Which one would you pick for being the best source of how to use the GH2/3 for video purposes?
Are there any tutorial DVDs out there? Those are also often useful.

No, I have not read the Rocky Nook manual.

So far I've downloaded and printed the 2 Panasonic manuals, but haven't read them yet. I'm hoping they'll be better than the typical electronics manual.

I found the Panasonic GH2 manual quite confusing. YMMV, of course.

I purchased the Rocky Nook GH2 book and it helped quite a bit. I still don't quite get it all but that's because I don't use my GH2 enough to have all the settings become second nature to me.

D

Excellent description of GH3 video modes here:

Micro 4/3rds Photography: GH3 guide to video modes (http://m43photo.blogspot.com/2012/12/gh3-guide-to-video-modes.html)

Good one, Bruce! I've printed it out.