What's a problem is that there aren't any good books about it. Practical OCaml was almost universally panned, so I skipped it. I'd love a good book on OCaml or Haskell.
The best way to learn Haskell is a combination of #haskell on irc.freenode.net and the Haskell wikibook (incomplete and often flaky, but up until the beginning of the Advanced section, a very nice introduction to the language)
I've learned Haskell by reading online tutorials and articles, but a new book (Real World Haskell) will be published and will likely be a good introduction to Haskell.
