Here's an authors account of royalties received from the no. 2 best selling O'Reilly book at the time (around $500k over 6 years) https://martin.kleppmann.com/

Here's an authors account of royalties received from the no. 2 best selling O'Reilly book at the time (around $500k over 6 years) https://martin.kleppmann.com/2020/09/29/is-book-writing-worth-it.html https://martin.kleppmann.com/2020/09/29/is-book-writing-wort...