You might try http://liberomnia.org/wiki/Computer/The_Mill.en.html http://liberomnia.org/wiki/Computer/The_Mill.en.html for an overview, though the animations i

You might try http://liberomnia.org/wiki/Computer/The_Mill.en.html http://liberomnia.org/wiki/Computer/The_Mill.en.html for an overview, though the animations in the videos do make it significantly easier to achieve an intuitive understanding in many cases.