I just finished reading book “Applying Domain-Driven Design and Patterns: With Examples in C# and .NET” and I liked it.
This book talks about modern key concepts needed
to develop successful product of enterprise level. It describes how to build
your project without losing business needs out of view – you just start with
your Domain level. You develop with TDD and describing behavior of application.
Things with which you are operating are Customer and Order, but not
TBL_CUSTOMER and TBL_ORDER – this is one of key aspects, which means hiding
your infrastructure level and interacting with database from developer’s eyes,
which can be easily accomplished with NHibernate.
Book is excellent in examples which Jimmy presents. I haven’t seen
so good explanation of the State design pattern as it is in this book.
Book covers a lot of other interesting things like IoC, AOP, SOP,
MVC and so on… really lot of stuff under another light you ever seen. You need
to read this book if you are going to grow and keeping on track.
P.S. BTW as you see I read it in Russian (not my native language also :) but I have it paper variant). 

If you haven't subsribed yet, you can subsribe below: