How do I create a zip file installer containing WordPress plugin files?

I have created my first WP plugin. The plugin dir contains several files, “my_plugin.php,” a css files, script, readme, etc.

Oddly, I cannot find a thing on the web on “how do I put these files into a zip archive” so that the plugin can be installed via Admin > Plugins “add new.”

Windows’ “add to zip folder” doesn’t work, as the zipped folder is loaded into the media uploads dir on the server.

Thanks!