Looking to learn Map Design – Need help with importing models

 

  

I'm currently learning map design and level creation in s&box. I'm really enjoying the process, but I'm having trouble understanding the proper way to import custom models into the editor.

Could anyone recommend some good video tutorials or beginner-friendly guides on model importing and mapping? Also, if there are any active Discord servers with experienced mappers that I could join to learn from and ask questions, I'd really appreciate it!