[xwiki-users] tutorial to develop full fledged websites on xwiki?

I know xwiki has lot of potential. i am looking forward to develop the full fledged website like http://www.albertdemun.net/xwiki/bin/view/NBSitePublic/. It would be helpful to know if there is some tutorial exists explaining how we can develop the full website (For example website i pointed above) where we can separate type of UI components most of the website usually have. I know probably there are some different extension/plugin existing at different places but if we can have single page explaining how we can develop full fledged website it would be great. Thanks in advance.