This is atep by step tutorials how to setup Debian server this includes
Debian Installation
FTP Server Setup in debian
Webserver Setup in Debian
Samba Server Setup in Debian
Database Server Setup in Debian
Time clock sync for debian server
Mail Server Configuration in Debian
VNC Server setup in Debian
Proxy Server Setup in Debian
SSH Server Setup in Debian
tftp Server Setup in Debian
DHCP Server Setup in Debian
IPtables Configuration in Debian
DNS Server Setup in debian
complete Debian Linux Server Setup Tutorials