From Blender3dClub:
Most use keys:
G - Grab/move selected items.
S - Scale selected items.
R - Rotate selected items.
X - Delet menu. Many options.
E - Extrude a vertex, edge or face.
B - Box selected items.
B - again.. ’Paint Brush’ select items. Mouse wheel will adjust the size of the brush.
A - Select all (Deselect all).
K - Loop cut [...]
TAB: changes between edit mode and object mode. Obviously, object is for whole object, edit to edit the object.
CTRL+TAB: allows to change between vertex, edge or face edition mode.
Subsurface is here:
In Ubuntu the alt key moves windows. Change that at System/Preferences/Windows. If you are using GL Desktop (Compiz) you might also change that there (System/Preferences/GL Desktop).
To navigate on the viewports: http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/The_3D_Viewport_Window
The defaults, resumed are:
MMB: rotate
Shift+MMB: pan
Ctrl+MMB or scroll wheel: zoom
The rotate view feels completely different from Max/Maya because the default option is View rotation as [...]
