NHibernate is cool, but it is so hard for many people to find out some useful enough real practical tutorials or guides.

Ben Scheirman had a very cool article series about NHibernate together with Domain-Driven Design (DDD). From this series you can get a practical architecture process experience and finally get a complete NHibernate based DDD development experience. Following are the links:

1. A Journey with NHibernate – Part 1
2. A Journey With NHibernate – Part 2
3. A Journey With NHibernate (and DDD) – Part 3
4. A Journey with Domain Driven Design (and NHibernate) – Part 4
5. A Journey with Domain Driven Design (and NHibernate) – Part 5
6. A Journey with Domain Driven Design (and NHibernate) – Part 6