For Beginners: Firstly, a good guide to learning the very basics of haskell is the first 6 chapters of [learn you a haskell](http://learnyouahaskell.com/chapters). While reading this, it is a very good idea to also be solving simple problems with what you know. A good list of problems to try is the [haskell 99 problems page](http://haskell.org/haskellwiki/H-99%3a_Ninety-Nine_Haskell_Problems). These start off very basic, and get more difficult as you go on. It is very good practice doing a lot of those, as they let you practice your skills in recursion and higher order functions. I would recommend skipping any problems that require randomness as that is a bit more difficult in haskell.
Thanks Swami !!!