Getting help from the seller
When something in a lesson doesn't make sense.
If something in a lesson doesn't make sense, the course's Questions tab works the same way as on any other product: ask, and the seller gets notified.
It's worth checking existing questions before asking your own. A lot of common sticking points in a course end up answered there already, visible to every buyer, not just whoever asked.
For anything about the purchase itself rather than the course content (a download issue, wanting a refund) that's a Trust & Safety matter, not a question for the seller.