Anton has a good introductory blog on developing with WebSharper here.
We also owe a huge thank you to Intellifactory (particularly Adam and Anton) for their excellent, timely high quality feedback on F# itself.
Here's an excerpt from the Intellifactory website:
The IntelliFactory WebSharper™ Platform
With the IntelliFactory WebSharper™ Platform you can develop rich, client-based, and highly responsive web applications using F#, enjoying all the benefits of Visual Studio™ and IntelliSense™. Developing both the client and server-side functionality with F# gives you unrivaled productivity, a dramatically more compact code base, and powerful language features to get your tasks done quicker, more robustly than ever before.