I'm self-publishing a book on combining React and D3. Talk about niche.
So far (over 2 years), it's resulted in about $50,000 of revenue. Probably going to breach $100,000 lifetime revenue by the end of this year.
So far (over 2 years), it's resulted in about $50,000 of revenue. Probably going to breach $100,000 lifetime revenue by the end of this year.
Here's a preorder link for the new edition (you already get 180 pages): https://gumroad.com/l/mTWg
I should update that, but I've been busy improving the content and building better examples and learning how to do better video so I can do justice to the planned upgrades.