There are lots of sample images from both the Black Library ebook and interactive sample download to see. While there is not a lot of information, I always go through these if not for info, but to enjoy the artwork they show off.
Here is a collection of the image from the Black Library
http://www.blacklibrary.com/all-products/codex-cult-mechanicus-ebook.html
https://itunes.apple.com/book/codex-cult-mechanicus-enhanced/id996892305?ls=1&mt=1110lqaZ
