If you want to make pictures that are similliar to Fygomatics work, then I think photoshop tutorials is the thing you are looking for. I think Fygomatics work is based more on photoshop skills than on poser knowledge.  Nothing wrong with that, in my opinnion, it's the end results that matter and clearly fygomatic's end results are impressive.

D'oh! Why do things that happen to stupid people keep happening to me?