Modeler:

alt (hold down)
causes Left-Dragging to Pan or Rotate the view-ports

n
opens the numeric requester for the selected tool

spacebar
toggles between selection modes

spacebar
if a tool is activated, this deactivates it

x
cut

c
copy

v
paste

z
delete (this has been remapped in many new configs – del can also be used)

t
move tool

y
rotate tool
h
stretch tool (non uniform)

Shift - H
size tool (uniform)

a
fit all

Shift - A
fit selected objects in all views

Ctrl – a
fit current view only

F2
move the selected items to the origin (the center of the world)

comma / period
Zoom In / Zoom Out

q
opens the "Surface Name" panel – to rename the selected polygons


w
opens the "stats" panel – to select by name, and all that

l
load an object

s
save an object

TAB
activate or deactivate "Sub Patch" for the selected polygons

Shift – f
"Smooth Shift" tool (then click and drag)

b
bevel tool (then click and drag)

p
make polygon out of selected points

k
"kill" – remove selected polygons, leaving their points intact

m
merge points

u
undo

1 –10 on the main keyboard
selects the corresponding layer as foreground

alt + 1 –10 on the main keyboard
selects the corresponding layer as background

1 –10 on the little keypad
changes the view ports to previously saved settings

Ctrl + 1 –10 on the little keypad
stores new settings (the current ones) for the view-ports

d
display options panel

o
general options panel

F1
Configure keyboard shortcuts

Shift - F1
Configure onscreen menus (add buttons, etc.)

-
hide Selected points or polygons

=
hide unselected points or polygons

F12
synchronize current object with Layout

Layout:

u, o, d, t, y, h, H, comma, period, and n
Are the same in Layout as in Modeler – note that the numeric entry panel is built into the lower left hand corner of the Layout screen.

m
motion panel (edit the motions of objects in a graph window)

p
"panel" – opens the properties panel for whatever item is selected (object, camera, etc)

i
inverse kinematics options panel

Enter Enter
press the Enter key twice to make a keyframe (when the dreadful "Auto Key" features are disabled, which should be pretty much all the time).

Shift -
shift selecting these keys activates the corresponding edit mode:

O, B, L, C
O = object mode, B = bone mode, L = light mode, C = camera mode

F1
Configure keyboard shortcuts

Shift - F1
Configure onscreen menus (add buttons, etc.)

Spacebar
toggles through Move, Rotate, and size, and Stretch

F12
launch Modeler


Important note: The author is not or may not be a natural English speaker and there is a high chance of mistakes in every way. Corrections and comments are welcome.