M
Having just attended a one day in person workshop - I would say this is one of those where an online program is not as helpful. There are unplanned events and questions that occur. We participated in a lot of hands-on activities that 'one touch' is critical such as how the aircrete feels like or should feel like when wet, when to add what, how much to make, how to check airpressure, what can go wrong with equipment and how to troubleshoot, etc. So worth attending in person. There are so many youtubers out there posting videos on this stuff who have no idea what they are doing..... beware.