Request: NPC/Ragdoll to Playermodel Tutorial

I would like to turn: http://www.garrysmod.org/downloads/?a=view&id=94916 into playermodels.

Is there a decent tutorial to do this? I haven’t requested anything on facepunch, so instead of having someone to do it for me, I would like to learn to do it myself.

I think the RP models are getting a bit old. Is there a good hobo model too? I don’t like the idea of hobos actually being half rotted corpses… seems a bit unrealistic. lol

Thanks!