Dotdeb is a repository containing packages to turn your Debian boxes into powerful, stable and up-to-date LAMP servers
aptly is a swiss army knife for Debian repository management: it allows you to mirror remote repositories, manage local package repositories, take snapshots, pull new versions of packages along with dependencies, publish as Debian repository. You can try it right now just for free.
This document tries to describe the building of a Debian package to ordinary Debian users and prospective developers.
This manual describes the policy requirements for the Debian distribution.
This is a guide to using debconf with your packages, aimed at a Debian developer.