I am enrolled in the Intro to Intermediate classroom. I can't attest as to what is in the Intro Classroom, but I would assume it is the same material, just more of it in the Intro to Intermediate version. I have a good background in the Doyle method, but have not been practicing it in several years. I saw Colin's classroom as a good oppportunity for a review, and I was not disappointed. I don't know his background with Doyle, but he follows the method pretty closely with some minor departures. But the added benefit that Colin provides is how he has seemlessly blended Doyle method with a Irish Stick method based on old Saber technique. The "Ever Forward" emphasis of the Doyle method essentially means that the goal is to close from long range to in-fighting range as quickly as possible and end the fight with the two-hand stick grip up close and personal. It has been said that the Doyle method is "learning to fight at close range with a long range weapon." What Colin's "expanded" system provides is the option to keep the fight at long range should you choose to! What is nice about the classroom is that the material is divided up into relatively short video clips, none longer that about 10 minutes. This allows you to easily to go back and review something you didn't fully get, and lets you easily progress through the material at your own pace. The lessons are well-organized and clearly presented. At $50 this is a steal!! Even if you don't practice and just want to get a feel for what the system is like, you can't beat that price! Ever Forward!