How to Install KDE Desktop Environment on Linux Mint 19 Tara
Linux Mint used to have a KDE desktop environment edition. But starting from Linux Mint 19 Tara, Linux Mint won't have any more KDE desktop environment edition.So how do we get KDE desktop environment on Linux Mint? Well, you can use Linux Mint 18.3 KDE edition, or you can install KDE Plasma 5 desktop environment on Linux Mint 19 Tara.
https://linuxhint.com/install_kde_linux_mint_19/