And then once you have done that...
How to install KDE Plasma desktop for Linux Mint | ZachsTech https://m.youtube.com/watch?v=KSfK8pTldvA
How to Switch From Windows to Linux | Mental Outlaw https://m.youtube.com/watch?v=S98qGgOqF-k #linux
Discussion
Why would you go with KDE Plasma on Linux Mint, if they don't have an official spin (and therefore no official support in their forums)?
I've been using Linux for 14 years already, so I would probably breeze through those instructions and would be self supporting.
But I wouldn't recommend installing a different desktop environment to new users, especially one that uses a completely different graphical toolkit (Gtk vs Qt).
I forgot to include the original note, that's who it was addressed to
PS - I also don't care what you think.
Zero learning curve? Some learning will have to happen. After installation, what will the boomers do with it?