Welcome!
to start off, a quick summary of useful resources and books for
Haskell...
1.
http://www.haskell.org - the main source of info & downloads
2.
http://www.haskell.org/tutorial/ - pretty good tutorial and
overview
3. book: "Real World Haskell" by Bryan O'Sullivan, Don Stewart, and
John Goerzen.
Free on-line copy and discussion/resources at
http://book.realworldhaskell.org/
It's a good survey of the language and current libraries.
4. book: "Programming in Haskell" by Graham Hutton.
Reference material at
http://www.cs.nott.ac.uk/~gmh/book.html
It's a crisp and very clear introduction to the core language, in
about 200 pages.
The definitive compiler is GHC (
http://haskell.org/ghc/). It includes
a batch compiler and a simple interactive front-end.
Better for initial experiments is Hugs (
http://haskell.org/hugs/):
it's a more interactive system yet still provides the bulk of the
language and the libraries.
Have fun!
Paul