if someone can answer this question. Are they any good auto-rigging software or add on for blender if so can you list them for me which one is the best for a human rig ?Thank You.
Rigify. Its an addon that comes with Blender, all you have to do is to enable it.
Watch this fantastic free tutorial series to learn how to use it: https://www.youtube.com/watch?v=-JSFcSxsaTs&list=PLdcL5aF8ZcJv68SSdwxip33M7snakl6Dx
Enjoy! 
I never knew its already in blender. Thank you 3dloot . this is very helpful
