Stamatina K. Koutsileou graduated from the Faculty of Philology (UοA) and obtained her Master’ s in Education from the Hellenic Open University. Her dissertation (2017) is on “Open Educational Resources and Practices” (Higher Education, Adult Education). She taught Humanities and Greek as a Foreign Language in the Hellenic Air Force Academies and prepared students for the Greek University Entrance (Panhellenic) Exams. Since 2007, she works for the Hellenic Academic Libraries-Link’s projects (Thesaurus, HEAL Journal), at National Technical University of Athens. From 2013 onwards, she is engaged in “Kallipos” (https://www.kallipos.gr/en/), the first open academic textbooks’ publishing initiative in Greece.