Some of the books are in Amazon. Those books, you could find them in public libraries too. Some are online books that you could make use of immediately.

1. Google's Books on SRE
2. GitHub: System Design Primer
3. Introduction to Kubernetes
4. Interview Book
5. Spring Security: Authentication and Authorization In-Depth
6. Graduate Course in Cryptography
7. System Design Primer
8. System Design Interview
9. Algorithms for Modern Hardware
10. Browser Engineering
11. Book on Reinforcement Learning from Human Feedback
12. Hacktical C
13. A Practical Guide to building AI Agents