Darn! My brain got side-tracked, didn’t it?!
The tutorial is here and it should work exactly the same with Manjaro. I know because I did it on Arch (the “father” of Manjaro).
Keep in mind: The command to install DKMS on Manjaro is:
sudo pacman -S dkms
As Manjaro uses pacmac instead of apt. 
And yes, helping people and having them smile at the end of the day - well… it makes my day. Honestly. They say that “If you want to see a good change in the world, then become that change.” - In short, it’s the “Lead by example” approach.