Shortcut keys for polygon editing.
g: move
g, z: move along the z axis
g,g: vertex/edge slippage
s: scale
s, z: scale along the z axis
s, shift+z: zoom in the xy plane
r: rotate in the view plane
r, z: rotate around the z axis
r,z,90: rotate 90 degrees around the z axis
r, r: arbitrary rotation in three-dimensional space
e: Extrude along the normal direction (extrude)
e, z: Extrude along the z axis
e, s: extrude and scale
alt+e: secondary menu
ctrl+rmb: Extrude to the cursor
Vertices, edges, and faces can be extruded
i: interpolation surface (inset)
ctrl+b: edge chamfering (bevel)
ctrl+shift+b: Vertex chamfering
ctrl+r: ring cut
k: cut (knife)
More shortcuts
A few shortcuts:
.: Center the object
shift: fine adjustment
shift+rmb: position the cursor
z: switch coloring mode
alt+z: switch perspective
q: quick favorites
ctrl+1/2/3: Add 1/2/3 level subdivision (may conflict with 1/3 view switching)