Thank you so much!! It took me a minute to understand as I got confused at there being essentially 2 library folders. One for the system, and one for the user, and a mystery to me why it’s the user library that’s hidden, and not the system library. But I digress, it took me a while to even find out how to find that folder, but figured it out
(For anybody else out there, you go to your user folder with the house icon, you click the gear inside the finder window and go to view options, and then select the box that says “view library folder” and it becomes visible.
I got it working now! So cool!! I’m going to go plunder Shadertoy now :)