If possible go graphical. This makes opening multiple terminal windows easier. But there are more than one interface available in non-graphical mode. ctrl-alt-1-9 or function keys will give you as many debugging interfaces as you need.
What do you enter in your debugging interface/session?
There are other logs that might be helpful but these did it for me.
Always validate your work. If you create a user use the id command to validate you met the criteria.
Don’t forget systemctl enable servicename.service . This will insure your system configuration will persist after boot. This is part of the grading criteria.