"Learn You Some Erlang for Great Good" is a highly regarded resource for those interested in learning Erlang, particularly for its application in building reliable real-time systems. Several comments emphasize its clear and approachable language, praising the effort the author put into making complex concepts accessible. Readers note the book's effectiveness in teaching the intricacies of Erlang’s syntax and design choices, which are essential for understanding its applications in real-world scenarios, especially when troubleshooting within the BEAM ecosystem. However, there are criticisms related to the book's formatting, suggesting it could be more user-friendly. The discussions also hint at the advantage of knowing Erlang for Elixir users, as both share foundational technology, thus enriching their programming capabilities. Overall, the book is seen as a valuable introductory tool, especially for developers interested in functional programming and concurrent systems.