[Haskell-cafe] Learning advice

I wish to learn Haskell. I purchased a book - An Introduction to Functional Programming Systems Using Haskell but I think this might be too outdated. I'm using GHC and it seems that some of the functions used in the book are no longer a part of Haskell. I'm looking for advice on books or tutorials that might be more up to date. So far I'm finding Haskell difficult - I may be too thick. Regards Chris Saunders