Yes!  

It's another monad tutorial. I've tried hard not to do it but finally it came out.

I wrote a book on Haskell in Russian. It's a translation of the chapter

that is dedicated to monads. I was convinced by friends to publish it.

The monads are explained with pictures and Kleisli categories.

Hope this can help to someone to grasp the monad concept.

-------------------------------------

ps: pictures were made with diagrams

Thank you for being kind with my awkward English!