Forum:How do I create an info box?

I am a new member named Bookbinder hoping to start helping wookiepedia. I have been using wookiepedia as a non-member for almost five months now and I decided to join. I was just wondering how I create one of those info boxes.... I don't know what they're called. They have a picture at the top and a ton of information. Can you tell me how to create one?