Keys
Anywhere
G move · R rotate · S scale. Then X Y Z lock an axis, type a number for an exact amount, click or Enter to accept, Esc to cancel.
Tab edit points on/off · Shift+D copy · X delete · Ctrl/⌘+Z undo · Shift+Ctrl/⌘+Z redo
Editing points
1 dots · 2 edges · 3 faces
A all · Alt+A none · Ctrl+I flip
Shift+click or +drag = pick more · Alt+click edge/face = loop
E extrude · I inset · X delete faces
Bones (pick an orange dot)
E add a bone from it · G move it · X delete it
M merge dots · F fill dots with a face · Ctrl+B bevel
Camera
left-drag spin · right-drag slide · scroll zoom
numpad 1 front · 3 side · 7 top · Ctrl+1 back · . fit