Selection
Z Toggle wire frame view (transparent)
Rightclick Select
Shift For multiple selections
A Select all or nothing
B Box selection
Left mouse Drag to select
Middle mouse Drag to deselect
C Circle selection
Left mouse Select
Middle mouse Deselect
Scroll Resize circle
Right Mouse End circle selection
Ctrl+LeftMouse Drag Lasso selection
+Shift lasso deselect
Ctrl+RightClick Loop select Select loop between 2 selected vertices
Alt+RightClick Edge loop Selects adjacent edges
Alt+Ctrl+RightClick Edge Ring Selects parallel edges
Shift G Select similar Select everything similar to current selection

Transformations
S scale
R rotation
G Moving(translation)
+Ctrl (and Shift) Incremental steps
X, Y or Z Direction(or middle click and drag)

View
Numpad 1 Front view Numpad 3right view Numpad 7 Top view
+Ctrl Back view Left view Bottom view

Editing
E Extrude
Alt+E Extrude individual faces
(Alt+)F Fix
Ctrl+M Mirror Or scale -1
P Separate selected
Shift+D Duplicate (switches to grab mode)
GG Edge slide vertices
Shift+R Repeat last
* Enter calculation during transforms
Space bar Search tool
Decimate Geometry Reduce number of vertices
Intersect(Boolean) Use geometry to cut/join

Snap menu

Shift+S

Add menu

Shift+A

Special menu

W
Subdivide
Remove doubles
H Hide
Alt+H Reveal

Face menu

Ctrl+F
Intersect(boolean)
Solidify
I Inset faces
Ctrl+T Triangulate selected faces
Alt+J Convert Tris to Quads
Ctrl+N Recalculate normals

Edge menu

Ctrl+E
Ctrl+B Bevel
Bridge Edge loops

Vertex menu

Ctrl+V
Y Split
Ctrl+Alt+B Bevel

Tools panel(left)

T
Remove doubles
Subdivide
Set origin
Merge menu Alt+M
Delete (dissolve) menu X
Spin Alt+R
Screw Like spin, but with an offset
Knife projection Cuts geometry from other object (in view direction)

Transform panel(right)

N
Transform Position, Rotation, Scale, Dimensions
3D cursor Position
Item Name for object
Mesh Display Lengths and angles etc. (in edit mode)
Ctrl+left mouse Click Arrow to collapse all items
Left mouse (drag) Arrows: Expand items
Handles: Arrange items



Curves
In Add menu Select a type of curve
Alt+C Convert mesh object to curve, or vice versa.
Bevel Object In curve settings; specify another curve to extrude along selected curve

Modifiers
Subdivision surface Smooths an object to higher polygon count
Boolean
Decimate
Bevel
Solidify