Installing GUI (KDE) in CentOS 7
Here I show you how to install CentOS 7 minimal on a virtual machine then install a GUI, in this case KDE, on it.
Virtualbox (virtual machine program):
https://www.virtualbox.org/
Linux Distro of CentOS:
https://www.centos.org/
Commands to Install KDE:
yum groupinstall "X Window System"
yum groupinstall Fonts
yum install kde-workspace