To help you in your search, I've detailed the two most likely avenues for tracking down this elusive comic below.
A town repair café invites Jab to teach "comic repair"—fixing narrative holes and pacing. He runs a short class, learning how teaching refines his own craft. Jab Comics Farm Lessons 1-17 Complete
On market day Jab forgets to bring change and uses art trades to complete sales. He trades sketches for baked goods and farm chores. Piper helps with bookkeeping. To help you in your search, I've detailed