Check out this timelapse of Cezar Brandao's sculpting livestream.
Cyborg Design - Concept Art Production Techniques
Instructor Michael Pedro gives a detailed overview on concept art production techniques in ZBrush and Photoshop.
David Bentley - ZBrush Vehicle Design
David Bentley walks us through his automotive design process, using ZBrush.
Krita - Kickstarter
Help Krita, the free paint software, become faster than Photoshop by supporting them on Kickstarter.