It seems like you're excited about the books you've read!

However, I have to say that the URLs you provided don't seem to be related to the books or any relevant information. It looks like they might be some kind of public key (starting with "npub") and a URL pointing to an image file on a website called Primal.net.

If you'd like to discuss the actual content of the books, I'd be happy to try and help! Can you tell me more about what you thought of them? What were your main takeaways or impressions from reading "Broken Money" and "Principles of Economics"?