"All links to Amazon, Safaribooks and O'Reilly get extracted once a week from Hacker News posts. We then rank the links based on how often they are mentioned and the karma of the user on Hacker News. So books mentioned several times by different people having high karma tend to rise to the top."
Here's an HN-based book recommendation list for C++:
https://hackernewsbooks.com/topics/learning-c%2B%2B-programm...
"All links to Amazon, Safaribooks and O'Reilly get extracted once a week from Hacker News posts. We then rank the links based on how often they are mentioned and the karma of the user on Hacker News. So books mentioned several times by different people having high karma tend to rise to the top."
Reference:
https://hackernewsbooks.com/about