I think for absolute beginners there needs to be a structured plan for about 4 months to learn how the sentence structure works, and listening to the language, and practicing making all the sounds of the language. I also think you -Jeremias V- should be teaching Spanish speakers English, Italian, French, and Chinese. Teachers should not be teaching their native language. It is absurd. You never learned your Native language as an adult. How can you really teach something that you never learned? Language just happens to us as children unless there is an issue that makes a person unable to learn his native language organically from his parents and his environment. You, have learned English, Italian, French, and Chinese. You should be teaching Spanish natives how to learn English, Italian, French, and Chinese. That is where you are an expert in learning a language. You can help other Argentinians learn foreign languages which is very cool.