I have been educating for awile now, in many different environments. I have found myself overpreparing before class to calm my nerves and to get instant buy in from the students. I have found that this is of utmost value, even if you do not have mastery of the content you are teaching. It not only establishes credibility, but it gives momentum for the class, making it easier to flow through the rest of the class and build as you go. It is harder to catch up than it is to keep momentum going.
