Common Shortcuts
General
CtrlZ - Undo
CtrlShiftZ - Redo
G - Turn On/Off a Gizmo
Doubleclick - Add new point (in 2D editors)
Selection
CtrlA - Select All
Ctrlselect - Add to Selection
Shiftselect - Remove from Selection
Space - Select/Deselect hovered point
Q - Hover next Point
ShiftQ - Hover previous Point
Translation
ArrowKeys - Nudge on XY
PageUp/PageDown - Nudge on Z
Scale
Shift - Uniform scaling
Rotation
Shift - Set stepsize 0.1°
ShiftCtrl - Set stepsize 0.01°
Ctrl - Set Stepsize 5°