This is more of a tips overview of how i rig muscular characters using y drivers and constraints in blender and focuses on the arm part. https://www.youtube.com/watch?v=WfLLwsJcSdE&t=160s
http://www.svartberg.com/tutorials/article_normalmaps/normalmaps.html#1.1 http://freesdk.crydev.net/display/SDKDOC3/Chamfering+Edges (previously linked to by computron)