Books and courses are actually a tremendous amount of work upfront. Last book I wrote for a major published I only got $6000 and it consumed hundreds of hours.

Books and courses are actually a tremendous amount of work upfront. Last book I wrote for a major published I only got $6000 and it consumed hundreds of hours. Self-publishing is high profit but the same amount of work (if you care about quality and reputation), no upfront advance, and you have to do your own marketing.