Select multiple anchor points

Direct selection tool + Shift-click

Direct selection tool + Shift-click

Select entire path

Direct selection tool + Alt-click

Direct selection tool + Option-click

Duplicate a path

Pen (any pen tool), Path Selection or Direct Selection tool + Control + Alt-drag

Pen (any pen tool), Path Selection or Direct Selection tool+ Command + Option-drag

Switch from Path Selection, Pen, Add Anchor Point, Delete Anchor Point, or Convert Point tools, to Direct Selection tool

Control

Command

Switch from Pen tool or Freeform Pen tool to Convert Point tool when pointer is over anchor or direction point

Alt

Option

Close path

Magnetic Pen tool-double-click

Magnetic Pen tool-double-click

Close path with straight-line segment

Magnetic Pen tool + Alt-double-click

Magnetic Pen tool + Option-double-click