http://www.apache.org/ is the Apache web site, with lots of documentation.
http://www.apacheweek.com/ is the Apache Week on-line webzine.
http://eunichs.org/Linux/TkApache/ is the TkApache Configuration Tool by Michael Holve.
http://www.esi.us.es/~ridruejo/gui/home.html is the Apache GUI Configuration Project.
Netcraft Survey of January 1998 indicates that over 50% of servers on the Internet are running Apache or one of its derivatives. See the press release at http://www.ssc.com/lg/issue24/apache.html.
Three example configuration files are available by anonymous download in the file ftp://ftp.ssc.com/pub/lj/listings/issue55/2932.tgz.