The tutorials for cartoon characters are pretty much the same for a more human type, its just a style, everything is made the same way from the ground up, its just using the eyes to turn it into something more realistic. No tutorial can teach you that, thats down to observations in every apsect of light and color down to shape and forms of human anatomy.

One thing with Poser that does bug me, is that being procedural characters you can never pass them off as your own design.

cheers
Jay