When comparing Real World Haskell vs Learn You a Haskell for Great Good!, the Slant community recommends Learn You a Haskell for Great Good! for most people. In the question“What are the best resources for a intermediate programmer to learn Haskell?” Learn You a Haskell for Great Good! is ranked 2nd while Real World Haskell is ranked 5th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free
Available online for free.
Pro It has a sense of humor
Pro It walks you through new features in an order that doesn't overwhelm you
Cons
Con Poorly organized and hard to follow
The book jumps around, includes confusing function names and many of the code examples don't compile.
Con Not really "real world"
The book doesn't feel very "pragmatic". The title implies a practical approach to Haskell, but it takes way too long to be able to actually create something using this book as lot of time is spent on theory.
Con lack of exercises
To really learn Haskell, it helps tremendously to work through well-designed exercises.