What you need is a guide to help improve the existing knowledge and skills, and show you just what you need to know to get up and running with a new system quickly. You've become NET developers, we'll help you get up and running as a Ruby on Rails developers on the operating system:. Windows, Mac, or Linux. You will come to learn the joy and power inherent in the "convention over configuration" philosophy, the natural elegance of the MVC architecture, and the essence of REST-based design you develop applications that accommodate web browsers, handheld devices, and even XML web service clients with an unparalleled easy . Along the way, you'll see good practices of agile development, explore test-driven development with Rails.