@awesams so, libraries loaded w npm install, are places in the node_modules folder.

so, you go into the node_modules folder for this module, and do a git clone of this one library(which creates it’s folder)
then cd to that folder, and follow his instructions (readme.md)

Hi, so I figured it out. Sorry if I was confusing, here is my problem and solution just in case anyone ever sees this. 1) i followed all steps in the installation guide which brought me to the default MM screen that goes on when you barely install it. 2) i pressed ctrl+q and it exited me out into the desktop screen. 3) I installed the spotify module following all steps. 4) this is where my question is, how to get back into MM (the screen that shows when MM is in use) to see my spotify module.
Solution: what I was doing wrong was i made a new terminal and did
DISPLAY=0: nohup npm start & without doing cd MagicMirror first. Thank you for the responses