I spent some time to write an article that should explain resource binding in DirectX 12. When I looked at this for the first time I had a tough time to get my head around resource binding ... so I am hoping this article makes it for others easier to understand. Let me know in the comments ...
https://software.intel.com/en-us/articles/introduction-to-resource-binding-in-microsoft-directx-12
https://software.intel.com/en-us/articles/introduction-to-resource-binding-in-microsoft-directx-12