Haskell.org

Repository for information on the lazy functional programming language Haskell: Descriptions, documents, history, news, HaWiki, software (libraries, tools), humor, merchandise, and links.
http://www.haskell.org/

Hello, World program

What Hello World in Haskell looks like.
http://www2.latech.edu/~acm/helloworld/haskell.html

Haskell API Search

Search engine for the Haskell standard libraries (Prelude, List, Array, etc). Search by function name, or type signature. Gives examples and overviews of many functions.
http://www.nmitchell.co.uk/code/haskell_api/