Navigation:
- Rotate - MMB-drag
- Pan - Shift-MMB-drag
- Zoom - Wheel or Ctrl-MMB-drag
Numpad navigation:
- View front: 1
- View right side: 3
- View top: 7
- Use Ctrl+(1, 3, 7) for opposite views
- Toggle perspective/ortho: 5
Selecting:
- Select: RMB
- Add to selection: Shift-RMB
- Select all/none: A
- Lasso select: Ctrl-LMB drag
- Select loop: Alt-RMB
- Select linked: L while hovering over mesh
Selection modes
- Change selection mode: Ctrl-Tab
- ... to Vertex: Ctrl-Tab, 1
- ... to Edge: Ctrl-Tab, 2
- ... to Face: Ctrl-Tab, 3
Editing:
- Delete, Dissolve (X)
- Extrude (E)
- Fill (F)
- Loop cut (Ctrl-R)
- Knife (K)
- Duplicate (Shift-D)