You'll have to set up port forwarding to open up your Minecraft server to users outside your local network.
However, right now your server is only accessible to devices using the same internet connection as you. Technically, your server is ready to fire up now, and you'll also see a few new files in your server folder, including the "server.properties" file where you can customize your game. Be patient, as depending on your computer, creating your server may take several minutes.