Nano is the easiest-to-use terminal-based editor that you're likely to find on a Unix system by default. All the important key commands are listed at the bottom

Nano is the easiest-to-use terminal-based editor that you're likely to find on a Unix system by default. All the important key commands are listed at the bottom of the screen and everything! It's a great editor to recommend in beginner tutorials since it requires very little setup or learning to use, but if you're already happy with a different one there's probably no reason to switch.