Amazing! Niche tech books definitely have a market in them. I wrote a generic "teach yourself to program" self-help book and sold ~100 copies my first year.
Started with 0 audience, 0 idea of how to write a book and ended up turning it into a fairly sizable newsletter (1k+) and made a couple grand for my month or two of time spent.
I wish I knew much more about self-publishing when I published it, but for my second book, I'm very prepared this time around and have strategies to help it perform better that I got from a book called "Published".
Started with 0 audience, 0 idea of how to write a book and ended up turning it into a fairly sizable newsletter (1k+) and made a couple grand for my month or two of time spent.
I wish I knew much more about self-publishing when I published it, but for my second book, I'm very prepared this time around and have strategies to help it perform better that I got from a book called "Published".
https://www.amazon.com/Published-Proven-Blank-Published-Auth...
I think the real challenge of self-publishing is advertising, marketing, and simply getting your name out there. The writing part is fairly easy!