+1 for Elm to learn Haskell. It is indeed way simpler, and has very friendly error messages. It lets you concentrate on grokking the basics: no side effects, pattern matching, recursion, currying.

After some time you start wondering why you have to type `List.map` and `Maybe.map` and `Set.map` when they all do the same thing. Then you'll be ready for some Haskell :)