Blender tip: any numeric field can do math for you. Type 5+2, press Enter, get 7. It also handles -, *, /.
Example: camera at 5 m, move object +2 m? Type 5+2 and confirm.
It converts units too: enter 3’7″ and Blender converts to metric automatically.
Use this in Location, Rotation, Scale, modifiers, and more. Save this for later and tell me your favorite hidden Blender trick.