To see Unity shortcuts press and hold the Super key. To customize shortcuts open System settings ( gnome-control-center ), go to keyboard and select Shortcuts tab. Explore all the categories to find what you’re interested in changing and click on it to change. Then press the keys for your new shortcut.
Super Key –> Depends upon the keyboard. (Normal Windows keyboard –> Windows Key is the Super Key )
Divide the application screen area into half and share it among two applications on screen:
Shortcut: Ctrl + Super Key + <- / -> key depending upon the are which you choose for the current window.