There is a large amount of detailed information available about the
X server, the clients that connect to it, and the assorted desktop
environments and window managers.
/usr/X11R6/lib/X11/doc/README — Briefly describes the
XFree86 architecture and how to get additional information
about the XFree86 project as a new user.
/usr/X11R6/lib/X11/doc/RELNOTES —
For advanced users that want to read about the latest features
available in XFree86.
man xorg.conf — Contains information
about the xorg.conf configuration files,
including the meaning and syntax for the different sections within
the files.
man X.Org — The primary man page for
X.Org Foundation information.
https://www.X.org/
— Home page of the X.Org Foundation, which produces the
X11R6.8 release of the X Window System. The X11R6.8 release is
bundled with Red Hat Enterprise Linux to control the necessary hardware and provide a
GUI environment.
https://xorg.freedesktop.org/
— Home page of the XR116.8 release, which provides binaries
and documention for the X Window System.
https://dri.sourceforge.net/
— Home page of the DRI (Direct Rendering Infrastructure)
project. The DRI is the core hardware 3D acceleration component
of X.
The Concise Guide to XFree86 for Linux by
Aron Hsiao; Que — Provides an expert's view of the
operation of XFree86 on Linux systems.
The New XFree86 by Bill Ball; Prima
Publishing — Discuses XFree86 and its relationship with the
popular desktop environments, such as GNOME and KDE.
Beginning GTK+ and GNOME by Peter Wright;
Wrox Press, Inc. — Introduces programmers to the GNOME
architecture, showing them how to get started with GTK+.
GTK+/GNOME Application Development by Havoc
Pennington; New Riders Publishing — An advanced look into
the heart of GTK+ programming, focusing on sample code and a
thorough look at the available APIs.
KDE 2.0 Development by David Sweet and
Matthias Ettrich; Sams Publishing — Instructs beginning and
advanced developers on taking advantage of the many
environment guidelines required to built QT applications for KDE.
