We've just moved our source repository. Please stay in sync with the bleeding edge Castle development with our SVN source control at
https://svn.castleproject.org/svn/castle/trunk/.
Check the article Introducing Castle Part II for a more comprehensive introduction to Castle on Rails, Windsor container and the NHibernate Facility.
http://codeproject.com/csharp/IntroducingCastleII.asp.
