Prerequisites

Before you start:
Have your Raspberry Pi 500 up and running
Have a basic understanding of how to work with the Raspberry Pi
Have ssh up and running (via raspi-config)
Know what the Linux command line interface is and how to work with it
Know what a shell script is
Know what sudo is and how it works
Know the basics about Linux users and the file permission system.
Have an ssh-client installed on your main computer or know how to start an ssh connection in a terminal session
Connect your Raspberry Pi 500 to your home network
via Wi-Fi (okay)
with a LAN cable (better)
Be able to log into your Raspberry Pi's desktop by 
having a display attached
by using a VNC Client
by using Raspberry Pi Connect
If you do not use a Raspberry Pi 500, be prepared to use this write-up more like a hint how it can be done and be prepared to work out your own way to a functional tool-chain.
If you are not yet familiar with Linux systems, consider asking friends to help you to get started.