KDE is a software project comprising a desktop environment known as Plasma, a collection of libraries and frameworks known as KDE Frameworks, and several applications known as KDE Applications. Their UserBase wiki has detailed information about most KDE Applications.

Installation

Plasma

Before installation, make sure Xorg is setup.

setup-xorg-base

Install the plasma meta-package. This will install the required Plasma packages and sddm and pre-configure it to use the Breeze theme. Alternatively a more minimal installation can be done by installing plasma-desktop.

KDE Applications

This material is work-in-progress ...

A KDE Applications meta packages has yet to be made
(Last edited by PureTryOut on 21 Jun 2019.)

Starting Plasma

Plasma can be started using a display manager or from the console.

Using a display manager

When Plasma is installed via the plasma meta-package, this has already been setup using sddm.

Select Plasma to launch a new session in Xorg
Select Plasma (Wayland) to launch a new session in Wayland

From the console

The Xorg session can be launched by installing xinit and appending exec startkde to your .xinitrc file. Then just start X.

xinit

For the Wayland session run

XDG_SESSION_TYPE=wayland dbus-run-session startplasmacompositor