There is a very good Steam Workshop guide by Baryonyx that has been extremely helpful to me. You can find it here: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=903068274

Most of the models I've uploaded I've obtained from "The Models Resource" (they're the first link that shows up on google). You'll need Blender to work on everything (but you probably already knew that). Working on TTS workshop models is a great way for you to learn and get a little familiar with the basics of Blender. While I currently don't have plans or projects for TTS I do hope this guide at least helps you.

How did you do this? Was looking into how to add models into TTS but doesn't seem to be anything very direct or simple. Any pointers or anything would be greatly appreciated and if you still work on jazz like this definitely hit me up if ya can!

Absolutely love it.