| [Monads as containers](http://www.haskell.org/haskellwiki/Monads_as_containers)
| [What a monad is not](http://www.haskell.org/haskellwiki/What_a_Monad_is_not)
* [Haskell wikibook: Understanding monads](http://en.wikibooks.org/wiki/Haskell/Understanding_monads)
+* [Haskell WikiBook: Monad Transformers](http://en.wikibooks.org/wiki/Haskell/Monad_transformers)
* [You Could Have Invented Monads! (And Maybe You Already Have.)](http://blog.sigfpe.com/2006/08/you-could-have-invented-monads-and.html)
* Yet Another Monad Tutorial: [part 1](http://mvanier.livejournal.com/3917.html) [part 2](http://mvanier.livejournal.com/4305.html)