Q:

How to create GIS like Uster? 

I downloaded QGIS, GeoServer, OpenLayers, Ext, GeoExt, qgis-web-client and osgeo, and I have map shapefiles.  I would like create a web site like the Uster site. 
I need help, can you provide tutorial links? 

A:

Go through the following questions. 

GIS for the web
Steps to Start Web Mapping
Web GIS Development Skill Sets

