You need to scroll to see the others. At either end of the scroll bars are the scroll arrows . When the scroll bar is gray you can press on a scroll arrow, making the contents of the window glide past you, like the scenery outside a train window. As you press on the arrows, this box moves so you can tell what portion of the window you are viewing. When the scroll box is all the way at one end, that's the end of the list or of the window.
Some people call the scroll box an elevator because it goes up and down like one.
The title bar is the area at the top of the window in which, logically, the title appears. This title is the name of the disk, folder, or document you have opened. As you drag, you will see the outline of the window. Just let go when you have the outline placed where you want, and the window will appear in that position. If the windows are overlapping, the active window is the one that is foremost.