Let’s set the internet. To do so, you need an ethernet cable and router with connection. Plug the cable to the router’s and raspberry’s LAN port. Then, click here to read about assigning static IP. It is necessary to communicate with raspberry via the internet.
When you do it, type “ssh root@raspberry_ip” and press enter. System may ask you for the password. Search for a label on the box in which hardware arrived or try to find out on the manufacturer’s website.