Before diving in and building your first Nancy application, there are a couple of things you will need. First and foremost, I'll assume that for this recipe and the rest of the book, you have Visual Studio 2012 Express for Web or a higher version installed, and you have the NuGet Package Manager extension installed and up-to-date. If not, go to http://www.microsoft.com/visualstudio/eng/products/visual-studio-express-for-web#product-express-web, download and install Visual Studio, and then go to Tools | Extension and Updates... dialog and make sure NuGet Package Manager is up-to-date.