The tutor provides a good overview of Diva and suggests various applications and uses for many of its parameters. I would have preferred if he demonstrated such applications from time to time. It was almost exclusively explained, rather than demonstrated.
You might consider this nitpicking, but I consider it good advice. Tom: please work on reducing your excessive and unnecessary use of the words essentially, basically, and actually. I found it both distracting and bothersome. At one point you said "actually" three times in a brief sentence.
It is acceptable and correct to say, "A filter removes frequencies". You don't have to say, "Essentially, what a filter actually does is basically remove frequencies".