Here is the actual testimonials page: http://linguisticator.com/about-2/testimonials.html
I signed up for his free trial (no credit card involved, so I don’t have to worry about being scammed) It gives you access to about 1 hour 45 minutes of video of him describing some general linguistic terms such as “aspect” and “register” and how to understand them according to whatever language you are learning, memory techniques (he is a fan of mnemonics), prioritizing your vocabulary acquisition, filler words (how natives say “um” in their language), conversational connectors, etc, and he talks a fair bit about observing body language and what native speakers do with their hands, so you can imitate them.
His basic advise is to spend 15 to 20 minutes every day doing his special techniques to internalize the grammatical structure of the language, while spending the rest of your time doing listening activities and the like for vocabulary acquisition (pretty much the idea behind Barry Farber’s “How to Learn Any Language” book).
I’m sure there is mor to the system, but this is what I got solely based off of his trial period videos. I do like the way he presents his material, and since he no longer sells it as a $300 lump sum, but instead has various subscription models, I may subscribe for a month to watch the rest of his vids. I am not sure how much of the material will be new, but I do like the way he presents the grammar concepts, and for $30 (one month basic subscription) blowing through all the videos on a saturday afternoon may be a fun task.
As far as his potential to be one of Prof. Arguelles’s professors, here is his self described linguistic background: “I completed my BA summa cum laude and valedictorian at age 19 from UMBC double majoring in English and Modern Languages and Linguistics, concentrating in German. I went on to complete an MPhil with distinction at the University of Cambridge in Anglo-Saxon, Norse and Celtic, then began an MA/PhD at Cornell University in the Medieval Studies program, where I focused on Germanic literature and linguistics (Germanic Philology). I passed my comps after two years, receiving an MA, then defended my dissertation and completed my PhD a year and a half later, receiving my doctorate at the age of 23. While at Cornell, I studied not just Germanic languages, but also Latin, Classical Japanese, and Classical Chinese. Japanese was my first foreign language.”_