Here are all the movie tuturials on this site https://www.simplymaya.com/movie_pages/

or, you can find it above on your screen in the meny set.

I mean, tha basic of modeling a realistic cartoony character should be the modeling. I am trying to learn modeling my self for the moment.

Afterwards, when you are skilled enough to model the cartoon as you want it to look, I guess realistic texturing is the next step to learn.

Also, it takes time.