how to get Finder to automatically open a Finder window / or always keep one open? Let's say I have all my Finder windows closed. I'm in an application, like let's say Google Chrome. I ⌘-tab to the Finder icon to switch to Finder. But it shows me nothing... no windows, because I have no windows open. I have to then invoke ⌘-N to open a Finder window. 

Is there a way to get OSX to automatically open a Finder window when I ⌘-tab to the Finder icon to switch to Finder, since anytime I switch to Finder, I always want a window?
You can already open a new window if one is not already open by pressing the 


COMMAND-TAB and hold down COMMAND. 

Release TAB, keep holding down COMMAND, 

then press OPTION and hold it down. 

While still holding down OPTION, release COMMAND. Then release OPTION.

As far as doing it automatically you'd probably have to script something. 

Source: @l'L'l