Teach Yourself Haskell in 24 Hours

Is there a book like that? Which would teach everything one needs to write a Firefox level software in Haskell.

I seriously want to learn Haskell, but don't want to waste a lot of time on all perquisites.

There is even a Medical Education and Nuclear Physics in 24 Hours books: http://www.rapidlearningcenter.com/physics/high-school-physics/24-Nuclear-Physics.html

why Haskell is harder than the fucking nuclear rocket science?