NeoVim - Plugins
To make any changes to NeoVim, such as adding plugins, we'll edit the init.lua config in our user folder.
Type the following, hit the [Tab] key to auto-correct and THEN hit the [Enter] key:
nvim ~\Appdata\Local\nvim\init.lua
If the above doesn't work, you can also use the built-in NeoVim browser to get to it:
nvim ~\Appdata\Local\nvim\
Then find the init.lua file. For whatever reason, you sometimes can't go to it directly with one command.

To install a plugin, paste in between the area shown

For example, lets install NeoTree

Once that has been added, close NeoVim and re-open it.
You should see a window like this if you did it correctly:

After it's installed, as shown above, we can hit the lettter 'q' to quit and start using our plugin.