I sincerely recommend against LYAH! It takes sooooooooo loooooong to get to the interesting bits that actually make Haskell worth learning an has so many try-to-be-funny examples that it makes you run away screaming... I tried going through it but it was literally oscillating between putting my mind to sleep and making wish to grab a chainsaw :) And the "humor" and "pretty pictures" don't help either... they were more like poignant guide to ruby, something that you either love or they annoy the hel out of you (this was for me), but either way they don't help the learning experience at all.

I suggest HFH ("Haskell Fast & Hard") as the introductory tutorial to start with instead. You can pick from 2 formats:

- http://yannesposito.com/Scratch/en/blog/Haskell-the-Hard-Way... - static all-in-one-page format with pretty pictures

- https://www.fpcomplete.com/school/to-infinity-and-beyond/pic... - split version, but with the ability to open snippets in their web based IDE

...after this, Real World Haskell is probably the next step: http://book.realworldhaskell.org/read/ (I'm still at this step).