Most commonly used default hotkeys in 3D Studio Max

Most commonly used default hotkeys:

Q, W, E, R (select/move/rotate/scale)
1, 2, 3, 4 (sub-object 1, 2, 3, 4)
p = perspective viewport
L = left viewport
f = front viewport
+ = grow manipulator
- = shrink manipulator

Save yourself a headache and disable the default hotkey "x" (hide manipulator).
Use and cutomize the quad menus!!

cheers :)