This is programmer’s stuff! 
It looks out of reach for laymen like me, even if I’m a geek of sorts… I’d need a solid tutorial / user guide.
I’m using 
Typinator — it does many cool tricks, is easy to setup for non programmers and works perfectly with Obsidian.
I do also use Keyboard Maestro and sometimes manage to have Typinator and KM collaborate together.
Another benefits of these tools is that you can have your shortcuts synchronize between different machines, no need to define them on each one.
Olivier :-{)