It’s not a silly question.
…would this work if i copied the link?
By “this” I assume that you mean this development process and by “work” I assume that you mean to meet FCC’s requirements?
Sure. You can develop on your own machine for these challenges. In some ways that is a more “realistic” approach, but it comes with some challenges. For one, you’re supposed to provide a link to a working version of the app. How are you going to do that if you are building locally? One way would be to use github pages or something like that to host your app, perhaps with a separate folder for each app. Another option would be to just copy the code into a pen.
You also might consider a better code editor than notepad. Even notepad++ is an improvement, but things like VS Code and Atom are free and amazing.