Press the green flag, then ask a yes or no question and click inside the circle. The Magic 8 ball will shake after it finishes shaking the answer will appear.If it tells you to do something such as try again, I recommend you do it if you want to get an answer. If you get Error you can try again and you might get an answer or you might tire it out so that it wants to rest.
Credits - Myself Notes - I have made Magic 8 Balls in both Python and JavaScript in case you were wondering.