Apache Web Server
Excellent articles for beginners on Apache configuration:
http://www.linuxworld.com/linuxworld/lw-1999-01/lw-01-uptime.html - ?DeadLink
http://builder.cnet.com/webbuilding/pages/Servers/Apache/ss02.html
Debian's apache packages come configured to run as user 'www-data'. This is potentially confusing: files to be served by apache should not be owned by 'www-data', as apache should not normally be allowed to modify them (i.e. as long as you're not running a wiki).