Rotate Your Screen via Keyboard Ctrl-Alt-D Arrows
This tip won’t be useful to most of y’all, but you can rotate your screen by simultaneously pressing Ctrl + Alt + D and any of the arrow buttons. The down arrow will flip it upside down, the left or right arrow buttons will turn it 90 degrees on its side, and the up arrow will bring you back to standard orientation. If you use multiple displays, this feature allows you to orient just that display in a particular way.
Alternatively, you can right-click on the desktop background > Graphics Options > Rotation to turn your page around in all sorts of ways. This feature is available on Windows 7 and 10.