Adobe After Effects

Shortcuts:

F4 (Toggle Switches / Modes while mouse hovering in timeline or Composition view)
F9 (While selected keyframes (For Keyframe Assistant Easy Ease))
Ctrl + Alt (For enable Interpolation)
Ctrl + Alt + O after clicking on Potion Property (To get option for Orient Along Path)
Time Ruler (B for Mark In and N for Mark Out)
Ctrl + Shift + X (Trim Comp(Composition) to Work Area)

37 Basic Keyboard Shortcuts in After Effects By GFXMentor