There are several keyboard shortcuts available:

Ctrl-Shift-E: Split the view vertically.
Ctrl-Shift-O: Split the view horizontally.
Ctrl-Shift-P: Focus be active on the previous view.
Ctrl-Shift-N: Focus be active on the next view.
Ctrl-Shift-W: Close the view where the focus is on.
Ctrl-Shift-Q: Exit terminator.
Ctrl-Shift-X: Enlarge active window
Ctrl-Alt-W: Edit window title