Playermodel / ragdoll help!

Hello,

I am new to Garry’s Mod and I know someone that is willing to make models for me. I want at least one as a playermodel, and the rest as ragdolls. But as I have no knowledge of this particular field, I am not sure what things I need to get these working…

  1. What do models require to work in Garry’s Mod?

  2. Are there certain things that playermodels need that ragdolls do not, and vice-versa?

  3. How would I get these in the game, and possibly upload them to the workshop?

Thank you very much for the help, even if it’s just a link for a video that can help me! And thank you for considering to read this!