I’m trying to learn NLP. Most of the available material is “spoon fed” tutorials where you don’t really learn anything, cause you are just doing a by the numbers rehashing of the code. Is there any NLP challenge or data set which is challenging enough that one can actually learn from it, but still suitable to a beginner in the topic (I know other ML methods, especially times series, it’s just NLP that I don’t have any experience in)?