You only have to learn three things to use a computer: Your shell, your editor, and your version control system. That's it. That basic knowledge will carry you

You only have to learn three things to use a computer: Your shell, your editor, and your version control system. That's it. That basic knowledge will carry you far, and will be useful a decade from now. Those are the three best afternoons you can spend. Do it out of respect for the computer.