Modeling
Object Mode
| 1 – 9 | Mode/Element Switching |
| Left (LMB) Click | Select Object |
| (Shift +) Ctrl + A | (De-) Select All Object |
| Ctrl + i | Select Inverse |
| Up | Select More |
| Down | Select Less |
| Alt + LMB-Drag | Rotate view |
| Alt + MMB-Drag | Pan view |
| Ctrl + D | Duplicate |
| P | Set Parent |
| B | Proportional Editing / Soft Selection |
| A | Frame All |
| F | Frame Selected |
| Double LMB | Select Loop |
| Double Alt+LMB | Select Ring |
| ] | Select Linked |
| Q | Box Select |
| W, E, R | Move tool, Rotate tool, Scale tool |
| F1 – F4 | Front/Side/Top/Camera Viewpoints |
Reference
These shortcuts are referenced from Blender page. I only pick those that I think is useful for myself.