Now that you've learned the basic, let us execute this command:

ip a

It will print some fancy hacker-like output, but we just want to see what is our IP Address.

(click image to enlarge)

In this case, my IP Address is 192.168.178.42. To make sure it is a valid IP, try to ping it. It's like shouting "ping" and someone will reply "pong".

ping 192.168.178.42

It will then output the 'pong' part.

(click image to enlarge)

Yes, it is safe for me to show you this IP, as it is my local address. Only the network within my house can access this system.

To stop the endless output from the 'pong', simply press CTRL + C on your keyboard.