So this is how blogs work. You post a new one, and it is put on top of the stack of blog entries. Each post can be as long as you want, and can include pictures, audio, or video. Maps would be “pictures”.
This is an image. There are various ways to obtain them, but the easiest is to find it on the net, save it to the desktop, and then select it from there, and insert it into the post. Complicated? Yes, I am sure it is. Like anything, it is easy after the third try.