Last week i stumbled upon a interesting project: The liberation of the Debian Administrator’s Handbook. The goal of the project is described best with their own words:
Liberate the Debian Administrator’s Handbook
The Debian Administrator’s Handbook has been written by two Debian developers who are keen to share their knowledge. Accessible to all, this book teaches the essentials to anyone who wants to become an effective and independent Debian GNU/Linux administrator.
It covers all the topics that a competent Linux administrator should master, from the installation and the update of the system up to building packages and the compilation of the kernel, but also monitoring, backup and migration, without forgetting advanced topics like SELinux setup to secure services, automated installations, or virtualization with Xen, KVM or LXC.
Read more at http://debian-handbook.info/liberation