Vim commands for use while in insert mode

Charcter Manipulation

C-h - backspace

C-w - delete word before cursor

C-u - delete line before cursor

C-r - insert register content (paste)

C-o - execute one Normal command then return to insert mode

C-n - next Compleation

C-p - previous Compleation

C-x C-(compleation type) - various compleation types (lines, files, tags, etc)

C-v - vim command-line compleation

C-s - spell compleation

C-l - line compleation

C-t - indent

C-d - unindent line

C-t - indent