Linux.com published an interesting article - a tutorial - about famous components of Free and Open Source Software stack for Web Mapping. Justin Palk, the author, gives a very accessible introduction to building Web Mapping solution using GeoServer, PostGIS and OpenLayers. I think it’s a great writing for anyone who takes first steps in Web Mapping with FOSS4G.
Serving and styling maps with GeoServer by Justin Palk on September 24, 2008