went to see if that website had any suggestion for Greek. Books: "not very much, unfortunately". Schools: "again, not very many places offer a course". The forums are simply not loading.
For most people, I now recommend the Pimsleur[0] method as it explicitly teaches the “call and response” model, which I find most effective for the reasons I mentioned in my comment.
bambataa|3 years ago
Assimil are normally a good bet in my experience.
agos|3 years ago
Kortaggio|3 years ago
[0] https://www.pimsleur.com/