I am currently working on a basic course about #Linux for people in my local Makerspace.
Ofcourse, you can't really understand Linux without knowing how the state of Unix where in the 80's and 90's - so ofcourse, I am spending atleast 20 minutes talking about it.

What is an aspect that I should'nt miss?
Ofcourse, I'll bring up #GNU and the role if played for the success of the Free Operating System that most of us refers to "Linux" today.

Anything else?

@selea

free software foundation has teaching material on their websites. There are lots of technique and resources that might help.

@datagonerogue

Thanks, I'll check it out
I personally think it is important to have aa atleast background knowledge about it was back then :)