Someone paid my course over onchain today, and I usually send out a greeting mail after the payment, but I added one little ask there today - I wonder why you didn't choose LN? as it's much lower fee and faster; is there anything I should share more, like which LN wallets to use or maybe how to swap?

I think high chance that I might be one of the first BTC merchants that people engage with, it's nice to do more to help - more experiments = more learning = more sharing.

Learning opportunities can be created, and it's both sides learning. 👀