Copy selected: ctrl + c
Paste from clipboard: ctrl + v
Cut selected: ctrl + x
Select all: ctrl + a
Select all below: ctrl + shift + end
Select all above: ctrl + shift + home
Undo, redo: ctrl + z, ctrl + shift + z
Find: ctrl + f
Go to start of file, go to end of file: ctrl + u, ctrl + End
Go to start of line, go to end of line: Home, End
Go to line: ctrl + y
Comment/uncomment selected: ctrl + /
Indent/unindent selected: tab, shift + tab
Find all instances: ctrl + d (twice to change all)