:wq = save and quit :q! = abort and quit :i = insert (add text before cursor) :a = append (add text after cursor)
esc = back to normal mode
LHJK = right, left, down, up (combining with number, e.g. 5J = 5 lines up) $ = move end of current line 0 = move end of current line w = move forward a word, b = move backward a word gg = start of the line , G = final line 25G = to line 25