"At OSCON last week, my favorite tutorial was Simon Peyton-Jones's A Taste of Haskell. I've dabbled with the language before (and pair programmed with Audrey Tang once to find and fix a bug in Pugs), but I've never really felt comfortable with the language.
"It's nice to report that function composition actually makes sense to me now. (At Foo Camp, I spent ten minutes explaining to Brian O'Sullivan why and how it tripped me up every other time I tried to figure it out, so hopefully Real World Haskell will smooth out that path for other people..."