I have been using Windows my entire life: '95, 2000, XP and now 7.
I am considering now to switch to KDE Plasma 5. So far all my machines had one of the above operating systems pre-installed, so starting from scratch is new for me.
My question is, does Plasma 5 require some sort of 'background software' in order to run? Specifically, Is the KDE Plasma 5 Desktop Environment an operating system at the same time? Do I have to firstly install Linux as the operating system and then download the Plasma 5 environment?
Further, what is LinuxMint? Am I correct in thinking that this (and more generally any) Linux distribution is a bundle of OS and DE?
Thanks in advance for clarifications