Use vim commonly used commands

1. Enter insert mode

command	Explanation
i	Edited in the current cursor position
I	First insert the line
A	The insertion end of the line
a	Insert editing cursor
o	After the current line to insert a new row
O	Before the current line to insert a new row
cw	Replacement character to the end of a word from the cursor position

2. cursor

button	Explanation
h	left
l	Right (lowercase L)
j	under
k	on
w	Move to the next word
b	Move to the previous word