We just received our complimentary copy of Robert Pickering's excellent book "Foundations of F#".
This is the first book to cover the F# programming language from Microsoft. Robert has done an excellent job with this introductory book aimed at programmers with backgrounds in object-oriented or dynamic languages. The book covers various aspects of the .NET platform, object-oriented interoperability with existing libraries and some of Microsoft's more recent innovations, like LINQ.
"Expert F#" by Don Syme (the creator of F#) should be the next book published on F# later this year, followed closely by our own "F# for Scientists".