Not yet mentioned:
https://leanpub.com/haskell-cookbook, a good intro from an experienced tech writer.
If you like videos: https://www.youtube.com/results?search_query=haskell
The haskell matrix room and (slightly less useful for beginners) IRC channel: https://www.haskell.org/community
Curated resources:
https://www.extrema.is/articles/haskell-books