Copy (cmd+c)
Paste (cmd+v)
Grid (cmd+")
Group (cmd+g)
Select All (cmd+a)
Selection tool(v)
Direct Selct(a)
Pen Tool (p)
Text (t)
Zoom In (cmd +)
Zoom Out (cmd-)
Zoom 100% (cmd 0)

One key+Mouse
for copy&past
(option)