Step 3: Setting up KiCad
Run the installer for KiCad and go through the install process.
Make sure these options are enabled when installing:

Now open KiCad. It should look like this:

Create a new project (File > New Project…):

Save the project file in the repository folder created earlier. Make sure to uncheck Create a new folder for the project. Name the project whatever you want, but generally it’s easiest to just name it the same thing as the repository:

Just press Yes if you see this pop-up:

Now, you should commit to the git repository. Here’s how you commit in GitHub Desktop:

Note how it shows the changes made on the left.
You should commit after every important change, in case you ever need to revert.
Continue to Step 4:
Installing KiCad libraries