Is it possible to make a passive income for my effort & hard work by sharing Decks?

I’m Dr. Rizan. I’m studying for my MD/Anaesthesiology exam and preparing quite good quality Anki flashcards in Physiology, Pharmacology, and Physics for which I’m spending much more time and effort.
Is there any way to make a passive income for the effort and time by sharing those valuable flashcards which I put on my maximum effort to prepare…?

Dr. Rizan