Getting Started with F#
Download the F# CTP
Get the newest release of F#, including the compiler, tools, and Visual Studio 2008 integration needed to get started developing with F#.
Learn F#
Get resources for learning F#, including articles, videos, and books. Three sample chapters of the Expert F# book are also available for preview.
The F# Language Specification
Get all the nitty-gritty details of the F# language from the draft F# language specification. Provides a in-depth description of the F# language's syntax and semantics. Also available in PDF.
F# Microsoft Research Site
Additional F#-related content can be found at the Microsoft Research F# site, as well as links to previous releases of F#.