http://cg.tutsplus.com/tutorials/autodesk-maya/an-introduction-to-character-lighting-concepts-in-maya/

Lighting is the one of the most important aspects of creating great looking 3D art, but also one of the most complex and challenging to master. When done correctly it can help build masterpieces, when done incorrectly it can literally destroy even the best of works.

In today’s short, but informative tutorial author Pratik Gulati will introduce you to the fundamentals of character lighting using Autodesk Maya. This is a great entry level tutorial for beginners and more advanced users alike. These universal techniques can be applied to any 3D software, so even non Maya users can follow along!