ZBrushCentral

Tips or tutorial for making realistic human skin?

I just finished my model, and now I want to texturing it, and make a realistic human skin, but I can’t find any good tutorial for such work, and I’m new in texturing. So if anyone have or know any good (and understandable for beginner) tutorial or tip, I would really appreciated. Thanks.

http://www2.zbrushcentral.com/picasso/tutorial.htm