Most of the articles about functional Programming are either simple descriptions on composition and currying or about how a monad is just a monoid in the category of endofunctors. I wonder if there are no other topics in this field.
The articles on <a href="https://fsharpforfunandprofit.com/" rel="nofollow">https://fsharpforfunandprofit.com/</a> are pretty good, particularly the ones about "Railway-Oriented Programming" (<a href="https://fsharpforfunandprofit.com/posts/recipe-part2/" rel="nofollow">https://fsharpforfunandprofit.com/posts/recipe-part2/</a>)