The main goal of this portal is to guide your first steps with Debian. It explains the basics of installation and how Debian works. This portal is designed for beginners. It uses a simplified informatic language. We recommend reading introduction to Debian before starting here.
http://www.debian.org/releases/stable/installmanual - Official installation manual
http://d-i.alioth.debian.org/manual - Step by step installation guide for Debian Etch
http://d-i.alioth.debian.org/manual/en.i386/index.html - Step by step installation guide for Debian Lenny
http://kitenet.net/%7Ejoey/blog/entry/tour_of_the_Debian_4.0_CDs - Tour of the Debian 4.0 CDs - Advice on deciding which CD/DVD to download for installing Debian
http://mirror.home-dn.net/d-i - Backported Debian Installer Images Archive. This directory provides Debian GNU/Linux Stable installer ISO images with a modification by Kenshi Muto to support newer hardware, mainly SATA and Ethernet devices.
http://www.debian.org/devel/debian-installer - Testing version of Debian
http://www.osnews.com/story.php?news_id=2016 - The Very Verbose Debian 3.0 Installation
http://www.projektfarm.com/en/support/debian_setup/index.html - The Perfect Setup - Debian - This is a detailed description about the steps to be taken to setup a Debian based server that offers all services needed by ISPs and hosters.