May want a few pointers to a huge number of tutorials and books:

http://www.haskell.org/haskellwiki/Meta-tutorial

http://www.haskell.org/haskellwiki/Tutorials

Unfortunately, the wiki for books is out of date, I would suggest looking at those by Thompson (3rd ed), Hutton, Bird (Pearls of Functional), Hudak: http://haskell.cs.yale.edu/testnewtemplate/

also lots of cheats:

http://qiita.com/items/008c8a3859d432c39823