I've recently been absorbing everything Chris Oatley has to offer. This guy's amazing and really supports the art community in a fantastic way. If you're unfamiliar with him, he's a character designer at Disney and he writes some great stuff about breaking into the concept art business.
Feel free to visit his site and subscribe to his newsletters. If you do you'll be able to download some brushsets and textures and over the course of a few weeks you'll recieve an 'e-course' called 'The Key To Great Paintings'.
As for myself, I'm working on a yet again a really intricate scene, which I hope to finish this week. I'll keep you posted.