Alt + Middle Mouse Button: Drag to rotate the view
Alt + Scroll Wheel: Zoom in and out
Alt + Middle Mouse Button + Right Mouse Button: Drag to pan the view
W: Select the Move tool
E: Select the Rotate tool
R: Select the Scale tool
Q: Select the Dolly tool
A: Select the Pan tool
S: Select the Zoom tool
Spacebar: Toggle between perspective and orthographic views
Ctrl + A: Select all objects
Ctrl + Shift + A: Deselect all objects
F8: Toggle between object and component selection mode
F9: Select vertices
F10: Select edges
F11: Select faces
F12: Select UVs
Ctrl + I: Select the next intermediate object
Shift + I: Select the previous intermediate object
Alt + F9: Select the vertex face
Ctrl + Shift + F9: Shrink the polygon selection region
Ctrl + Alt + F9: Expand the polygon selection region
X: Create a new extrusion
C: Cut the selected object
V: Paste the cut object
D: Duplicate the selected object
F5: Delete the selected object
Ctrl + Z: Undo the last action
Shift + Ctrl + Z: Redo the last undone action
Ctrl + D: Create a new edge loop
Ctrl + R: Create a new edge ring
Ctrl + T: Create a new polygon
Ctrl + E: Extrude the selected faces
Ctrl + Shift + E: Inset the selected faces
I: Insert keyframes
O: Out keyframes
S: Set keyframes
A: Animate the selected attributes
Shift + A: Animate the selected attributes in absolute mode
D: Delete keyframes
Ctrl + I: Move the selected keyframes
Ctrl + D: Duplicate the selected keyframes
Ctrl + C: Copy the selected keyframes
Ctrl + V: Paste the copied keyframes