Disclaimer: I am NOT the author of Kronos. I'm learning the language and I'm into all things Haskell. I thought it could be interesting to HN as well. You can read more here: http://goo.gl/SNLxjo

If you want get into functional programming, Learn You a Haskell for Great Good!, Real World Haskell and Parallel and Concurrent Programming in Haskell are available online for free: http://goo.gl/4RoYrJ

EDIT – Here's a handy cheat sheet of features: http://cheatsheet.codeslower.com/CheatSheet.pdf