(Real World) Haskell

Thanks to Xmonad I got interested in Haskell recently. So after a few disappointing attempts to learn it from online tutorials like this one or that one I decided to grab Real World Haskell.
Don't get me wrong, the tutorials mentioned above are great and I still return now and then to look up various things. But obviously I am that kind of guy who needs some paper at hand and read it in an calm hour.
I've made some pretty good advancement with this book now and I can only recommend it to everybody interested in functional programming and/or Haskell.