Extreme Programming (Score 1)

I also found PSR well-written and very helpful. It described formally many practices which I had been trying to understand intuitively. It offers a very clear way of explaining what is expected of a piece of software. It also offers some guidance on elicting requirements from users. In a similar vein, I can recommend the guidelines of the Extreme Programming group (http://c2.com/cgi/wiki?ExtremeProgrammingRoadmap) .