Haskell is a great language and well worth your time. Here are some freely available learning resources for the aspiring Haskeller:
- The excellent Learn You a Haskell for Great Good by Miran Lipovaca is probably the best free Haskell resource on the web. It will soon be available in print, but the author told me that the website will be updated to reflect the changes made for the book!
- O’Reilly’s Real World Haskell also has a an online version. I’ve only read the first few chapters of this, but people told me it’s quite good.
- The Haskell tutorial by Conrad Barski, author of Land of Lisp and Casting SPELs in Lisp.
- In Write Yourself a Scheme in 48 Hours you’ll implement a small Scheme in Haskell, which is a nice introduction to Parsec.
If you don’t mind spending money to dive into Haskell, I can really recommend Programming in Haskell, which is an excellent introduction to the language. Last but not least I also want to point out Haskellers, a networking site for finding/offering Haskell-related jobs.