Using the “Show Desktop” button to show the Windows desktop is one of those options in Windows, that is right before your eyes, that most people do not know exists.
If you move your mouse pointer to the very bottom right corner of your screen, to the taskbar, next to the time and date you should see a line or a sliver (actually called a button).
If you hold your mouse pointer on that button the desktop will appear. You can actually click on that button to go directly to the desktop. You can also toggle back and forth from the desktop and whatever application you are in by clicking on that button. This is handy when you need to get to the desktop to quickly launch another app, document, etc… I personally have found this to be quite useful.
If this button is not allowing you to peek at the desktop, it may be turned “off”. To turn it “on”, right mouse click on the “Windows Start Button”, click on “Settings”, then click on “Personalization”, then click on “Taskbar”. On the right side of the screen, you will see an option to toggle the desktop peek preview on and off.