So how to configure all this?

Are you in a hurry? Really, such impatience. We will not be configuring anything just yet, remember, we have not even installed the system. (Seriously, youngsters these days…). This is basically a “short” overview of what you might want to know before the installer will ask you to provide a username and password, and then asks you to give another password for the root user. Because it will. You have been warned. (Don't worry, if you do survive the installer, there will be a lot more babbling… I mean instructions about configuring stuff, you will be up to your neck in it.)