Different courses would target the interests & social characteristics of different groups. An advertised sign-up would generally explain & steer the differentiation.

Beginner vs. Intermediate vs. Expert
Survey of what is out there vs. Highlights of most cherished events vs. fun group play
Lore that Gamers Know vs. What a working adult might enjoy most in this world
Who are the most respected studios of today & yesteryear with examples of why that is so.
History of the arts
Which games were & are most popular & why
Which gear is helpful & why