--Because the same links appear in the forum pretty regularly, it would be very nice if we could post them here too. I simply began gathering them, unsorted and uncommented:--
(also see page Links of Interest to Kanotix users)

General Linux Documentation

http://documentation.openoffice.org/manuals/∞
http://www.debian.org/doc/manuals/quick-reference/∞
http://www.debian.org/doc/#howtos∞
http://qref.sourceforge.net/index.en.php∞ (Debian basics, installation and system administration; document available in HTML, text, PDF or PS in many different languages!)
http://www.linux-docu.de/kat.php3?auswahl=Anleitung&sprache=en&no=0∞
http://linuxbasics.org/∞

VFAT/FAT32

GRUB Bootloader

GRUB Manual http://www.gnu.org/software/grub/manual/grub.html∞

System Updates, Installation Compiling Source

APT HOWTO http://www.debian.org/doc/manuals/apt-howto/∞

Printing CUPS

CUPS FAQ http://www.linuxprinting.org/cups-faq.html∞

Coding GnuPG?

gnupg Manual http://www.gnupg.org/gph/en/manual/book1.html∞
Article from the Linux Gazette March 2004 [[
http://www.desktoplinux.com/articles/AT3341468184.html∞

Kernel, driver programming, hardware related documentation

Alessandro Rubini / Jonathan Corbet
Linux Device Drivers, 2nd Edition:
http://www.xml.com/ldd/chapter/book/index.html∞
Porting device drivers to the 2.6 kernel:
http://lwn.net/Articles/driver-porting/∞

Set up of a DHCP server

Python

Logical Volume Manager (LVM)

http://www.linuxdocs.org/HOWTOs/LVM-HOWTO.html∞

Bash

Heiner's SHELLdorado http://www.shelldorado.de/∞

Browser

1. Opera:
http://my.opera.com/community/tips/∞
http://www.howtocreate.co.uk/operaStuff/linuxMods.html∞ (particularly "Enabling smooth fonts"!)
http://nontroppo.org/wiki/Opera∞

(In German) General Linux Documentation (auf Deutsch)

Let us know if there is an English equivalent
http://www.linuxfibel.de∞
http://www.selflinux.org∞
http://miklos.goto-my.de/docs/linux/∞
http://dugfaq.sylence.net/∞
http://www.linuxfaq.de/f/cache/1.html∞
http://www.linux-ag.de/linux/LHB/∞

VFAT/FAT32 (auf Deutsch)

Tips for vfat-filesystem under Linux http://www.pro-linux.de/t_system/vfat-tipps.html∞

GRUB Bootloader (auf Deutsch)

GRUB Howto http://www.pl-berichte.de/t_system/grub-howto.html∞
Kanotix GRUB FAQ http://kanotix.com/info/faq_d_grub.html∞
GRUB Thread from the Kanotixforum http://kanotix.mipooh.net/viewtopic.php?t=80∞

System updates, Installation Compiling Source (auf Deutsch)

Installing software under Linux http://www.tuxhausen.de/kurs_software_installieren.html∞

Set up of a DHCP server (auf Deutsch)

Setting up a DHCP-Server http://www.pl-berichte.de/work/server/andere/dhcpd.html∞
DHCP - Server under Linux http://www.tuxhausen.de/software_dhcpd.html∞
Server service DHCP http://www.openoffice.de/linux/buch/dhcp.html∞

Kernel, driver programming, hardware related documentation (auf Deutsch)

Jürgen Quade / Eva-Katharina Kunst
Linux-Treiber entwickeln
Eine systematische Einführung in Gerätetreiber für den Kernel 2.6
(Developing Linux drivers
A systematic introduction to device drivers for the 2.6 kernel )
http://ezs.kr.hsnr.de/TreiberBuch/html/∞