Download this cheat sheet to get the most out of VIM
The Vim editor is a command-line based tool that’s an enhanced version of the venerable vi editor. Despite the abundance of graphical rich text editors, familiarity with Vim will help every Linux user – from an experienced system administrator to a newbie Raspberry Pi user.
One important thing to note when using Vim, is that the function of a key depends on the “mode” the editor is in. For example, pressing the alphabet “j” will move the cursor down one line in the “command mode”. You’ll have to switch to the “insert mode” to make the keys input the character they represent.
If you’re new to Vim, open a terminal and run “vimtutor” to get you started with some initial commands before diving into the rest.