I also inadvertently came across an article I had written a couple of years ago about the basics of matte painting for the PSD Tuts+ website. It was just a short one explaining a few basic concepts and how Photoshop was used in the process. I’ll post a link to it in case anyone is interested.
The time has come for me to recertify in Photoshop once again. I had thought the deadline was earlier this month, but it is actually on the last day of October, so I will be studying up on the new features in CC and taking the exam soon.
See full post here: Digital Illustration with Adobe Photoshop CS6 Extended2013-10-16.