This is what I've read about most D70 books out there.  They don't offer
much more than what the manual offers, and what they do offer above that is
very basic.  This book (CD) assumes you know something about photography,
actually a lot about photography, and need to know how your knowledge
applies to digital photography by way of the D70, and pretty much all the
software you would use to "develop" an image.

------------
Thom Hogan's "Complete Guide to the Nikon D70" comes highly recommended
(and a "must have") in every reference to it that I have read.  Do a Google
search and you will agree.
 I would have preferred a paper version of the book, even at higher price.
A copyright release is provided which allows any commercial copier to print
a paper version as an option.
Regards,
Don F

I finally finished the book, and found it to be the perfect compliment to
the manual.  He takes every function and control and explains them in great
depth, with his own recommendations as to how to setup the D70 -- and why.

He also get heavily into the "workflow" and uses examples of both Nikon View
and Capture to take a NEF/RAW image from start to finish.  And he gets into
and explains each function of both programs in great detail, and how to use
each.  He uses his own images to explain how and what he is doing to take
what already looked like a great photo and make it better.  He explains
curves and the histogram, and lots of other stuff in plain English so just
about anybody can understand it.

He also get into flash photography quite heavily, so if you have any of the
Nikon flashes it's a great source of information.

Included are some sample curves you can download, and a few other things --  
lots of charts in Excel.  He even reviews other software programs, besides
Photoshop, and what they can do for you.

If the D70 has any weaknesses he brings them out, so you don't have to find
out on your own, and gives you ways to work around them.

The only drawback to the book is I really wish it was in print form.
However, being on a CD it makes an excellent reference since you can easily
search for anything you want.

I definitely learned a lot more about my camera and its functions, and will
hopefully be taking better images for it.  Again, he does not tell you how
to take a great photo.  He tells you how to capture a great photo with your
D70 and make it the best image it can be.  Just read a good book on
Photoshop and you're pretty much covered, however it was surprising what he
was able to do with Capture.