I obtained an information teacher's license this fiscal year (2025) as a subject-specific student in the Correspondence Education Division of Hokkaido Information University. This is all of the specified textbooks. I haven't written in them much, but I have underlined some parts with a highlighter. I don't think they're too dirty, but please understand that they have been used once. I struggled with the basics of programming, information system design, and introduction to information communication networks. I would like to purchase them as a set, if possible.