nvim essential commands

open a file with nvim FILENAME. you start in normal mode, so keys are commands.
hjkl— left, down, up, rightxdeletes the character under the cursorithen type, thenesc— insert before the cursorAthen type, thenesc— append after the lineesc:q!trash the buffer, oresc:wqto save and quit
capital A, not a. a appends after the cursor; A jumps to the end of the line first.
if something does nothing, you are still in insert. hit esc.