This is THE toolbox, available in both long and short versions, we recommend you start with the long and then rapidly migrate to the short. Arno is THE “dean” of OSINT for government, and the “dean” of the advanced librarian discovery movement.
We strongly endorse Arno Reuser as an individual, and recommend his training offerings available directly from him. By-pass the external vendor training link at the Repertorium and send him a direct email.
Worth a Look: Arno Reuser OSINT Wizard
Journal: Seriously Weird, & Then There Is Arno
2006 Reuser (NL) on Virtual Open Source Agency
2003 Reuser (NL) on Intelligence Librarian Tradecraft
Journal: Librarians and The Accessibility Paradox