I'm learning, but also having to build some automation for work and have a deadline to have the thing built. I have a cursorial understanding of JavaScript and have already built a few scripts designed to export artboards to files in photoshop as well as using basic conditional logic to determine which .psd files to export those artboards from.

In this new project, I need to be able to open and run actions on documents that will be listed in an excel sheet... all of the resources I have looked at pointed to ExcelJS or Node.js (which I haven't learned about yet)

I have not been able to start any tutorials, because all of the resources say, confusingly, to "use the following command" to install either. See images:

from a "beginners" guide to exceljs

NPM ExcelJS

and how to read and write excel file in Node.JS

Where am I supposed to "use this command"? It's not like a download button. I don't understand and I'm looking for a point in the right direction for the simplest explanation and the best resource for learning how to do this... I don't have any code because I don't even know where to start.

Any help is appreciated!