This is a list of my most-used shortcuts. Official list can be found in the Key Bindings article here and in a PDF printout here.
Ctrl + B- Show/Hide File Explorer panelCtrl + '- Show/Hide TerminalCtrl + Shift + KorCtrl + X- Delete lineShift + Alt + ↑/↓- Copy line downAlt + ↑/↓- Move line up/downCrtl + Alt + →/←- Move current tab to a Split Window Editor Left or RightAlt + Shift + Mouse Drag- Multi-line cursor selectionCtrl + [orCtrl + ]- Indent line left / rightAlt + Mouse Click- Select multiple linesCtrl + D- Highlight all occurrences of a word