I understand they have no clue about tidying things up, but this Debian machine hasn't been reinstalled in at least 4 years and I'm pretty sure I still don't have a clue about Linux, yet it still runs smoother than butter.
I'd like to help them but haven't touched a windows machine since Windows 8 showed its ugly face. I could handle myself with Windows 7/2003 but I'm pretty sure I lost it. Is there a commonly agreed best-guide?