What I need to do is build a type of database. Firstly have a few questions, whether what I have done it right...and how to do something else. This is my algebraic type for the database (correct me if its wrong) data Film = Film String String Int String with this as the data. testDatabase :: [Film] testDatabase = [("Casino Royale", "Martin Campbell",2006, "Garry, Dave, Zoe")] the last set of strings are the fans to the film. I want to be able to add a new fan, but not sure how to specifically insert it to there this is what I have so far: becomeFan :: String -> String -> [Film] -> [Film] becomeFan = do putStr "Which film are you a fan of: " filmTitle <- getLine do putStr "What is your name: " fanName <- getLine (if filmTitle == filmName then fanName : [Film]) -- View this message in context: http://www.nabble.com/Getting-started---help-tp23314466p23314466.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.