If you have Silverlight (Windows and Mac) or Moonlight (Linux) installed, then you can run the samples interactively in your web browser. The loading of the plugin takes just a second and it starts when you click the button below. If you don't have Silverlight or Moonlight, you'll get a link with installation instructions. If the plugin is not available for your system, you can also get the modified F# source code and compile it using either .NET or Mono.
For more information about F#, visit the try F# web site, which also contains information about installing F#, learning F# and also academic resources on teaching F#.