Sometimes you need to watch a senior analyst click through a SIEM to understand the flow.
: Currently offers a free entry-level program with a certificate that covers core security concepts. Effective SOC Threat Investigation Guide | PDF - Scribd
While many books require purchase, the methodologies they teach—like the "Pyramid of Pain" and the "Diamond Model"—are open standards. Here is a review based on the industry-standard knowledge and structure that this title represents.
Since you asked to "read" it online for free and then write a review, I have synthesized the core concepts of (typically referring to the methodology often associated with authors like Anand Prakash or similar security operations literature) to provide you with a comprehensive, helpful review.