Select and transform
Select, enter, move, scale, rotate, arrange
The Selection tool (V) selects and transforms. Almost all the work on objects you have already drawn goes through here: handles, arrow keys, menus and panels.
3.2
Entering and exiting containers
Groups, modifiers, symbols, text and paths open with a double-click.
3.4
Clipboard and duplicate
The clipboard across windows and documents, and ⌘D, which repeats the last gesture.
3.5
Scale and rotate with the handles
The eight handles, the center and rotation, with SHIFT and ALT.