I caught Professor Alexander Arguelles on Youtube. He is a polyglot. His claim to fame is that he invented shadowing. He has a series of videos where he explains how to recognize various languages according to their features.
Personally, I enjoy spending time not on learning languages but on how to learn them. I did not find much in that department from the good professor. In particular, listening to him interview language teachers from various countries, I was struck by their inadequacy. Sorry, but I would not care to study under any of them.
The word definitely needs my method!