We think there are 3 best SRE books. The first one is Site Reliability Engineering: How Google Runs Production Systems. The second is the companion workbook The Site Reliability Workbook: Practical Ways to Implement SRE. The third is a follow-up book Building Secure and Reliable Systems: Best Practices for Designing, Implementing, and Maintaining Systems. You can learn more about these and other SRE books in today's article.