vim how to edit code example

Example 1: linux edit file

sudo nano filename.ext

Example 2: vim command to open a file

vim filename 
i
*Insert/Edit Text*
*Esc*
:wq       (save the file and exit to commands)

Example 3: edit in vim

Press i letter on your keyboard to start editing (Insert Mode). When youre done press the ESC key to exit insert mode