1. Unpack OpenLayers to data_dir/www/
2. Try http://localhost:8080/geoserver/www/ol/wms.html
- see the basic map of Europe
3. Change wms.html to show USA Population layer from local GeoServer.
4. Try http://localhost:8080/geoserver/www/ol/getfeatureinfo-popup.html
5. Change getfeatureinfo-popup.html to connect to local GeoServer 
- ! have to remove Proxy
6. Try any other examples (markers, google, bing, wfs, ...)
7. Try http://gis.vsb.cz/ruzicka/ppdwww/openlayers/examples/zabaged.html 
- change it to have ZABAGED as not a base layer, but layer that can be turn on/off and is transparent