How to Sell Puzzle Books

I think I'm done with the updates for C++ 20 that I wanted to put in that book. For eBooks, I've sold 4,829 copies so far. That's not that bad. But then I have seven puzzle books that I've published. And I'll publish them on Lean Pub is eBooks and then wait for people to like buy them and then give me error reports while it's still a print an ebook. Once I feel pretty comfortable with it, then I'll push it off to Amazon for people who want the print version of it.