Stephan Wissel posted 5 very helpful articles on his blog ( wissel.net ) about Domino Development.

Part 1 => The NSF => Link
Part 2 => Forms and Documents => Link
Part 3 => Not all Documents are created equally => Link
Part 4 => Domino views are different => Link
Part 5 => Finding Data – Collections and Search => Link

Thanks a lot to Stephan. It´s very interesting material for an administrator like me 😉