A lot of my willingness to participate in a class would be who is teaching it (what are their credentials, for example) and the overall cost. If the teacher were fabulous and the cost low, I would be willing to take a class on almost any writing subject. But if the teacher is inexperienced, I'm not enthusiastic about their writing or teaching style, or the cost is high, I wouldn't sign up no matter how appealing the topic.
I'm with Pnina. Beta readers would be greatly appreciated.
I'd like a network / list of capable first readers - a critique - NOT editing.
As a faithful reader of The Whole Megillah, I would be interested in an online course you'd offer.