Here's an overview of what's in the User Guide:

Part II, “The Desktop” contains an introduction to the basic use of KDE, such as the section called “Windows, How To Work Them”, and the tools that you'll be using in all KDE applications, like the section called “Opening and Saving Files”. If you're new to KDE or even computers in general, you will probably find this section helpful.

Part III, “KDE Components” explains some important components of a KDE installation and how they fit together: KDE's multimedia and networking capabilities are extensive, and not covered thoroughly here, but there's a taster of both of them in this part of the User Guide. At the end of this part, you'll find a guide to tweaking KDE just that little bit more, in Chapter 16, Tinkering Under the Hood of KDE.

Part IV, “KDE and the Internet” highlights KDE's suite of Internet applications. KDE includes a powerful web browser, Konqueror, a full-featured email client, KMail, a news reader, KNode, and many more applications to make your Internet experience easier and more productive. This part of the User Guide contains information about setting up these applications.

Part VI, “KDE for Administrators” is a reference guide to some KDE features which will be useful to administrators setting up multi-user systems. This part also has information that may be useful to KDE users with single-user systems: where configuration files are stored, what environment variables affect KDE, and so on. The KIOSK framework is the KDE system which allows administrators to limit what users can do in KDE. It is potentially useful in many situations, but especially for running single-function kiosks with, for example, just a web browser, hence the name.