I think Stephen Diehl's What I wish I knew about Haskell is an excellent overview. (Although no longer maintained, I wish he continued with Haskell and drop his

I think Stephen Diehl's What I wish I knew about Haskell is an excellent overview. (Although no longer maintained, I wish he continued with Haskell and drop his worries about crypto.) Personally, I use ClassyPrelude and only a handful of extensions.