I enjoyed RWH much more after having learned a lot of the basics. It starts off simple, to be sure, but then quickly jumps into the deep end. For a book that's about real-world stuff it gets into a lot of unnecessary detail, too, that should have been deferred until later "advanced" chapters. I appreciated the hands-on approach to real examples, though.

"Learn You A Haskell For Great Good" [1], while much less complete, is the best intro I have found so far. It's also free.

[1] http://learnyouahaskell.com/