Digital painting is a pain to learn, but when you get hang of it, it gets easier. ConceptArt is a very nice place, but their criticism is harsh. Trust me. :P You can also look around on DeviantART for inspiration, just don't rip. And http://www.imaginefx.com is a nice magazine, cost around ̢̮â¬Å¡Ãâã5,99, much inspiration, tips, tutorials, workshops and stuff. But I hope you got a tablet, preferably a Wacom one, if not, you can get their Bamboo range, that is cheap, and good for starters.