Easily the best one IMO: http://haskellbook.com/ http://haskellbook.com/ . Unlike LYAH it covers stuff that is actually important to writing real haskell progra

Easily the best one IMO: http://haskellbook.com/ http://haskellbook.com/ . Unlike LYAH it covers stuff that is actually important to writing real haskell programs like testing code, managing effects via monad transformers, etc. Also this is one of the best references while you're learning (not good as a tutorial, but chock full of invaluable resources): http://dev.stephendiehl.com/hask/ http://dev.stephendiehl.com/hask/ . TBH I wish every language had an equivalent of this guide.