Animating using a skeleton structure

I have used blender and made some animations but I haven’t been able to find a good tutorial on making skeletons for things to animate them.
I have also seen people use these animations like the snurgle video
http://blenderartists.org/forum/showthread.php?t=75369&highlight=snurgle
I was just wondering if someone could tell me how or lead me to a tutorial

Look in the tutorial section for “BSoD: introduction to character animation”. It’s the newest and most comprehensive tutorial you’ll find for the basics of animating with armatures (skeletons). Also look at the PDF in my sig below for the best introduction to most things in Blender.

Thanks for your help I’m going to try it out now