Turning Ragdoll into Player Model?

Hello everybody, I need some help.
I’ve found a Ragdoll Model that I’d like to turn into a Player Model but I’ve never done anything like this before and have no idea how to do it.

From Googling I’ve seen that you need to somehow decompile the Ragdoll model and a working Player Model and then recompile the Ragdoll model with the ‘skeleton’ of the Player Model, or something like that.
Also seen that you need Source SDK and have downloaded that.

But how to do this I have no idea, is anyone able to help me out with this?
(Keeping in mind I’m a total beginner at this so any technical terms I likely won’t understand.)

Thanks in advance!

EDIT: I want it to be a player model for Gmod, if that makes any difference.

First of all, do you have any experience in modeling? Because trying to turn a ragdoll into a player model is tough work, at least from my limited experience with modeling.

To what you want to do, you would need a 3D modeling program like Blender or 3DS Max because you have to edit the ragdoll in order to get the playermodel.

No I don’t have any prior experience with modeling, this would be my first time trying it.

I would suggest you get Blender and watch tutorials first before you get into it. It’s fairly complex work.