Moving windows without the titlebar
If a window gets out of the visible area on your screen(s) it seems to be hard to get it back into your sight. But it is not that hard: just select the missing window, press ALT+Space to get the contextmenu on the missing titlebar. select Moving (or press M) as you might not know where the window is at all, moving it by the arrow keys might get thing worse. So: press an arrow key once, then move your mouse without clicking. There the window is again! Click, when you want to drop the window at the current position. Done!