Hi Dan and welcome aboard! As I tell all new members, explore the topics and feel free to jump in if you have anything to say or add. I hope you have a good time here.
Onward....
Recently, I was given a bunch of
ImagineFX magazines. If you're not familiar with them, they are devoted to digital art with side trips into traditional method artists and methods, but mostly geared towards digital painting. These are really terrific magazines because they not only deal with the mechanics of digital painting but also the theories behind good Art and the ethics problems inherent with using photographs in a digital paint program. I get very jazzed reading them. For me, they are every bit as inspirational as looking at and reading about traditionally created Art.
I had to laugh because when it comes to the mechanics, it reads exactly like artists who use traditional materials. Some artists say "You should do this" and others say "Never do this" and that makes me smile. Variations of the old "Don't use Ivory Black in your paintings"/"If you want to use Ivory Black go right ahead" argument.

The terms may be different ("dodge" and "burn") but the idea is the same. Which just goes to show that artists have strong feelings about certain methods regardless of the materials being used and you'll read them contradicting each other several times over the course of a few issues.
On the ethics side, the view on one method is universal: If an artist imports a photo and merely paints over it and calls it his/her own, the artist that does that is considered to be slime and a hack. I was not surprised, but I was delighted to read that all of the pros who give advice in columns stress drawing. Drawing, drawing, drawing. There is no such thing as too much drawing. Younger artists are gently scolded for not developing solid drawing skills and those who show good draftsmanship are applauded enthusiastically. I've noticed in a few Art forums that artists who post retouched photos are torn to shreds. You don't want to be around when somebody posts a photo that they ran the "Van Gogh" filter on and say, "Look what I painted!" The heat from the flames will practically melt your monitor.
So I guess what I'm trying to say is that I find it very comforting to read the same attitudes being applied to digital art that are applied to traditionally created art. At least on that score, the learning curve isn't so drastic.
-Joe-