Ubunchu … yes, as you read, not with a T but with a CH 
This comic explains many things about the world of Free / Open Source Software in a really entertaining way , and… putting aside any fanaticism or preferences for one distro or another, I truly recommend this comic 
To give a brief (very brief) overview… there are 3 friends (2 girls and 1 boy), one of the girls arrives one day with an Ubuntu CD , recommending to her friends that they use Linux … and, according to her, that they use UbunCHu 
The funny thing is that he begins to explain basic topics such as GPL, what is SWL, advantages, that not everything has to be with commands, daemons, etc ... but I repeat, in a very funny way hahaha.
Nothing, I really recommend that those who haven't read this read it 
And, those who have already read several chapters… don’t despair, we will put all the ones that are there, and we will put them in our language 
Here's the first chapter of Ubunchu :
