The VS11 beta includes a really slick cheatsheet style F# language reference. A gem for groking F# syntax. The samples are grouped into modules. A module is just a collection of value, function and type definitions. To execute the code in F# Interactive, highlight a line of code and then either type Alt-Enter, or right-click and choose “Send to Interactive”. To start F# Interactive, see the “View” menu. For more about F#, see: http://fsharp.