Master dDo for Photoshop with this complete overview by Wiktor Ohman.
Quixel’s immensely popular NDO and DDO have been reimagined, and along with 3DO and MEGASCANS are part of the upcoming Quixel Suite.
CGschool - Arch-Vis Training in 3ds Max, Photoshop and V-Ray
CGschool provides world-class architectural visualization training in 3ds Max, V-Ray and Photoshop.
Nondestructive Image Flattening and Reflection Removal
James Busby demonstrates nondestructive image flattening and reflection removal in Photoshop.