Yeah, F# feels like Don Syme looked at ocaml and haskell and applied a bit of yagni and tossed in some other useful conventions (I'm sure many others were involved as well).
It drives me crazy that Microsoft doesn't push it harder from an investment perspective. They don't even write books about it :)
There are books out there. For new language adoption, F# do have new features like Type Providers. However, it's not the best language in X for X in ['data science', 'distributed system'] etc.
Sorry, my language was vague. There are many F# books, but I find it telling that Microsoft Press doesn't really write books about it. Look at C#, VB.Net, Office, SQL Server, Sharepoint, etc. Almost everything has a new book (or 10) every new edition. F#? Nothing.
It drives me crazy that Microsoft doesn't push it harder from an investment perspective. They don't even write books about it :)