Series of posts geared towards the beginner developer to TDD.  These are meant to be as simple as possible to get the understanding across about TDD.

Part 1: TDD Test Driven Development for Beginners pt1
Part 2: TDD for Beginners pt2 - Pig Latin
Part 3: TDD for Beginners pt3 - The Application
Part 4: TDD for Beginners pt4 - Unit Tests