:h Insert-mode
	Help on the insert/replace mode
:h i_
	Help on all the keys in insert-mode


C-o
	Temporarily get out (for one subsequent command).
:inoremap <C-K> <C-O>D
	Delete to end of line, bash-style

	
Shifting:

C-t / C-d
	Shift a current line to the right/left (indentation).
C-n/p
	Complete a word (next/prev match).
C-x + C-l/C-f
	Complete entire line/filename
C-W/C-H
	backspace
C-k
	start digraph inserting mode

Ctrl-X mode

:h i_CTRL-X