Depends on your background of course, but Learn You a Haskell for Great Good has been pretty influential as a first look at Haskell. Read it with a REPL open.

Depends on your background of course, but Learn You a Haskell for Great Good has been pretty influential as a first look at Haskell. Read it with a REPL open. http://learnyouahaskell.com/ http://learnyouahaskell.com/