Kubuntu is a user friendly operating system based on KDE, the K Desktop Environment. With a predictable 6 month release cycle and part of the Ubuntu project, Kubuntu is the GNU/Linux distribution for everyone.

Kubuntu is an entirely open source operating system built around the Linux kernel. The Kubuntu community is built around the ideals enshrined in the Ubuntu Philosophy: that software should be available free of charge, that software tools should be usable by people in their local language and despite any disabilities, and that people should have the freedom to customize and alter their software in whatever way they see fit.

If you want to download Kubuntu from click here . Afte downloading .iso image from the download link you need to burn a CD after that you need to boot from your kubuntu cd you should see the following screen in this screen select “start or install kubuntu” and press enter.
The full guide:
http://www.debianadmin.com/kubuntu-6...reenshots.html