If you accidentally erase your work you can press ctrl z and your work will reappear. If you put three fingers on the touchpad and swipe, it will take you to a new tab.
To take a screenshot you have to press ctrl, shift and show windows and drag your fingers to what
you want to screenshot and then take your fingers off the touchpad and you will have your screenshot.
If you want see all the keyboards press ctrl, shift, alt ?.
I think this is very fascinating and knowing all the keyboard shortcuts makes me happy.
