In this tutorial, we show you very useful shortcuts in Cinema 4D. Any of these can be changed in “Window > Customization > Customize Commands.”

Shortcuts 

Undo + Redo
Ctrl+Z : Undo Scene 
Ctrl+Y : Redo Scene 
Ctrl+Shift+Z : Undo Viewport 
Ctrl+Shift+Y : Redo Viewport 
Ctrl+C or Hold Ctrl: Copy
Ctrl+V : Paste 

Main Tools
9 : Live Selection Tool
] : Increase Brush Size
[: Decrease Brush Size
8 : Lasso Selection Tool
E : Move Tool 
T: Scale Tool
R : Rotation Tool

Views
Middle Click or F4 : Maximize View
Hover+Page Up : Maximize Selected View
Hover+Page Down : Choose View 
F1 : View 1
F2 : View 2
F3 : View 3
F4 : View 4

Zoom
H : Auto Zoom Mode
– : Zoom Out 
Shift + : Zoom In

Mesh View Modes
N then the following : Mesh Modes
A : Gouraud Shading
B : Gouraud Shading (Lines) 
G : Lines
Q : Textures
R : X-ray

Axis Modes
X : Toggle X Axis
Y : Toggle Y Axis
Z : Toggle Z Axis 
W : Coordinate System Mode 

Selection
Ctrl+A : Select All
Ctrl+Shift+A : Deselect All

Animation
F9 : Key
Ctrl+F9 : Autokey
Shift+G : Go to End Frame 
Shift+F : Go to Start Frame 
F6 : Play Backwards
F7 : Stop
F8 : Play Foward
G : Move forward one frame
F : Move back one frame

Mesh Tools
C: Make Editable 
Hold Alt Click Deformer : Child Mesh in deformers
Click Edge+Ctrl : Extrude Edge 
Click Face+Ctrl : Extrude Face 
M : Selection Tools
U : Mesh Tools
L : Enable Axis Mode 
P : Snap Tool

Project Tools
Ctrl+D : Project Settings
Ctrl+N : New Project
Ctrl+W : Close Project
Ctrl+O : Open Project

Rendering
Ctrl+R : Render View
Shift+R : Render In Picture Viewer
Alt+R : Interactive Render Region
Ctrl+B : Edit Render Settings