This article explores the phenomenon of Michael Bazzell’s work, why his books are essential reading, the specific content found within his "Open Source Intelligence Techniques" series, and the ethical considerations of seeking this knowledge in digital formats.
Older versions (such as the 7th edition) have occasionally been made available for free by the author on sites like the Internet Archive to promote accessibility. Core Content and OSINT Techniques
If you cannot afford the book, here is how to get the same knowledge legally and freely:
