I searched a bit through the archives and found this book as a potentially good starting point:
I'm going to purchase it; the reviews seem to indicate that it emphasizes a hybrid studio/environmental approach and that's definitely something I am interested in learning. Specifically:
I'm looking for other good learning references for compositing work that might dovetail nicely with this book. I'm an advanced PS user and photographer so I'm looking for the technical stuff...no "my first Photoshop book."