The three articles below have been posted to the Composite Application Wiki. Each one is a good introduction summary to the new capabilities in the composite space. For the web container we actually had some additional tooling that did not make it in the first release. We are pretty excited to show this tooling at Lotusphere. Basically, creating components from web browser applications will literally be point and click – and that also includes Spreadsheet, HOD, and Notes Views. The article below goes into XPath but don't let it put you out – I can only say its getting better.