The advantage of a formal class is that you don?t know what you don?t know! Yes, YouTube has good stuff, but you have to know the topic is one you need to learn about. For example, many people don?t have a clue that water damage is the leading cause of problems with RVs. If you know that, you can look up how to inspect your RV roof and seams for leaks. If you do t know you should worry about the topic, you won?t go looking. I think there is real advantage in an organized syllabus that covers the important topics. You can always get more detail later if you need to.