Before amazon, there was a website that I went to that allowed downloading ebooks. Ibe bought off this website many times.

Books I have enjoyed:

• https://www.baen.com/1632.html
• https://www.baen.com/the-philosophical-strangler.html
• https://www.baen.com/oath-of-swords.html

Let me know if you have enjoyed any of these books in the past as well!