It’s a mix of too much basic and irrelevant tips from different realms: pronounced english (which, in my opinion could be a great course of it’s own), public speeking (only the basic of how to deliver which can be sum up to one page) and how to interact with other people (like how to say you are agree or disagree??? I strongly believe that if a person can understand those videos, I’m pretty sure that he knows that 5-years-old-extremly-basic-stuff).
As much I like this concept of course, “speak english professionally” or even “speak english” is really a big statement for that course. Actually, from what it seems, the main point of that course is to get the students to purchase the full package of courses that the Georgia Tech Language Institude is offering. If you really like to know a great course that relates to the topic, I strongly advise you to check out the some course “Public Speaking” by here at Delhi. Best of luck.