You can, if you'd like, buy the eBook version of my Economics for Everyone for one Bitcoin. (Note than when I first started selling the e-copy of my book, the Bitcoin was worth $6, today it is worth more than that :-). You can learn more about Bitcoin from the Bitcoin Foundation.)
They will notify me and then I will send you the .pdf file of the book (the condition is that you don't monetize the file, and if you do, share the proceeds with me 50-50).
If there are any questions please email me at firstname.lastname@example.org
And, the Gold Standard in Rock n' Roll: