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I haven't worked through it but the approach to Learn You a Haskell seems fun:

There are much better resources than LYAH.

Chris Allen has a good list and critique of different books/courses: http://bitemyapp.com/posts/2014-12-31-functional-education.h...

LYAH is a phenomenal introductory resource. As companion material I would also recommend the lecture series on C9 by Dr. Erik Meijer, https://channel9.msdn.com/Series/C9-Lectures-Erik-Meijer-Fun....

I second the C9 series. Dr. Erik Meijer does a great job of explaining a lot of concepts you need to understand.