Ask HN: Where to learn “advanced” concepts in Functional Programming

I have only recently started delving into functional programming seriously (for a little over past half year), and I see people talk about things like monads, and applicatives, and arrows, and ... (you get the idea).

I can code an work quite well in functional programming languages like Haskell, Scala, OCaml etc, and have been able to handle scenarios where such ideas are used, but it has been in an ad-hoc-based-learning way.

I'm basically looking for a good place to start reading all these more "advanced" topics/concepts in Functional Programming, so as to get a more serious grasp on them.

I would be grateful for any books/videos/talks/etc. which might have the same.