::I started with digital tutors they are good at bring you up to speed -> none to advance level range [I remember this one been fun Digital-Tutors - Quick Start to Rigging in Maya , you rig one blue guy and cartoon T-rex and bunch other stuff , either digital tutors or 3DMotive tutorial is good place to start ] after I was…
I can suggest few tutorials till you find mentor : The Art of Rigging its old but cover everything you need to know about rigging and mel coding + a lot of scripts you can learn from CGcircuit - The Base Skeleton /CGcircuit - Biped SkinningGnomon Character Rigging Axel/The Gnomon Workshop - Creature Rigging for Production