'Illustration Unchained' is a series of tutorials, a case study of one huge epic illustration focused on action and storytelling http://www.artstation.com/artwork/i-ve-got-you
Each episode is about different aspect of creative process, about techniques, design choices and decisions that you have to make.
Entire series spans for over 21 hours of video with commentary, also including some of the Zbrush tolls and psd files. Its a big chunk of knowledge that took me quite some time to accumulate, so... you know... enjoy it ;]
Twenty one hours!!! Its like having me by your side for an entire frigging day :P
Season one bundle includes (more info about individual episodes in the links)
Ep.00 Into the Zbrush:
Ep.01 Sketching Big:
Ep.02 Illustrating Colossus:
Ep.03 Illustrating Characters:
Ep.04 Illustrating Hardware:
Ep.05 Illustrating Mayhem:
Ep.06 Illustrating Big:
Download is around 9GB of compressed data.
If you have any questions just let me know and Ill do my best to help ;]