week15Maitri found a great resource called 3dats, 3D Architectural Training Solutions, which has PDFs of a 26-week course covering various topics.  Of particular interest is the PDF for week 15 which covers use of Photoshop.

Photoshop offers some great workflow tools to streamline the visualization process for many types of projects and create effects that would otherwise take far longer in 3ds Max. Here’s a few techniques that might save some time in the course of your next 3D project.

Experts and novices alike can probably find something useful in here as it covers layer blending and grouping, artificial depth of field and caustics, and using the various cloning and selecting tools.

via Free 3ds Max and Vray Tutorials | Video and PDF download from 3DATS.