I definitely agree that the most difficult part of learning something new especially something as esoteric as FP is knowing where to start and then where to go from there. I also benefited from and highly recommend functional-programming-jargon(https://github.com/hemanth/functional-programming-jargon).
Not the person you replied to, but I personally avoided it for a long time by avoiding the comments on [political/news/gender]-focused forums and subreddits. It isn't exactly a mainstream term.