ctrl+shift+o Split horizontally
ctrl+shift+e Split vertically
ctrl+shift+x Maximize current window(in splitted one), press again to have splitted view
ctrl+shift+t Opens a new tab in terminator window
ctrl+shift+i Opens a new terminator window
ctrl+ Increase font size
ctrl- Decrease font size
ctrl+0 Reset font size
ctrl+pageUp Goto previous tab
ctrl+pageDown Goto next tab
alt+arrowKeys Move to other splitted windows
Reference: https://www.youtube.com/watch?v=_U2Yy5B2ASU