Hey
I did a couple of writeups
This one is a deep-dive into the Universal Material:
https://www.behance.net/gallery/102948251/Octane-Universal-Material-Guide-Starter-File
This one is the best Substance workflow I could figure out:
https://www.behance.net/gallery/103311407/Substance-Octane-Workflow-%28C4D%29-Free-Starter-Files
let me know what you think