Download and Installation
You can download the discord app for various operating systems here: https://discord.com/download
On Linux, you can also install the discord app via snap:
sudo snap install discord
Registration
If don't have an account already, click on "register",
you will need a valid e-mail address.
Login
Once you're registered, log in with your username and password.
If you also have the discord app on your phone, you can also scan the QR-code to log in on your computer (e.g. option "Scan QR Code" under "User Settings" in the Android app.)
Connecting to Course Server
You will receive an invitation to the course server via e-mail or rocketchat