If you noticed, after installing ubuntu, when you first time shown the ubuntu desktop screen, there will be a pop up showing keyboard shortcut on ubuntu. This pop-up window will disappear after you click on something.
Is there a way to show this keyboard shortcut pop-up window again? because i think it's quite important for someone new to ubuntu, they probably didn't know such a keyboard shortcut exist. Don't worry guys i'm here to save you all!
The trick is to press and hold the super button for a few seconds until the pop-up keyboard shortcut appear. I know superman, but what is super button? super button is button on your keyboard that's probably marked as window icon.
How to show ubuntu keyboard shortcut pop-up window?
Press and hold the super button on your keyboard for a few seconds
That's it !
~ good luck ~