I'm mostly interested in workflow, painting process and tools you use. For example I don't really know how to start with brushes and work with them, since most of digital art seems to "hide" the process very well compared to traditional work where usually I can see how something is done.
Trying to get into digital painting/drawing as well, mainly for concept sketching/art... So I was looking for better tools to make digital sketching with a tablet easier, and make it feel a little like paper/pen/ink. I was never really happy with the brushes in Photoshop/Gimp...
: This one is really great. Nice pens/brushes. It's free and open source. Needs some time to get used to, and lacks some tools (like selection tool etc.). But really great for sketching, IMHO. And has only what it really requires...
*) Manga Studio
: Great for comics, inking in pure black/white.
*) SketchBook Pro
: I've recently discovered this one. It's good for sketching I guess, and has more options than MyPaint. But I still prefer MyPaint together with Gimp.
: Interesting brushes. Easy to use. Much easier than Corel Painter, and more intuitive... Good for real painting.
But that's only the tools.
When it comes to drawing itself, the process making images, I'm also still learning... For me it's a bit harder to draw with my Wacom than on paper (especially good linework). But it slowly get's easier...
(Currently trying out SketchBook Pro)