Have you ever accidentally closed the wrong tab on your browser and then become frustrated when you have to find your way to that tab all over again?
The good news is that there is a shortcut for opening the last tab you closed.
On Windows: Ctrl + Shift + T
On Macs: Cmd + Shift + T
Also if you use Chrome and accidentally close an entire window, these shortcuts will open the window back up with all the tabs that were in use before it was closed.