This lecture provides an overview of the 9th day of training in Computer Science, where four workshops were offered to teachers. The workshops covered concepts behind internet and the web, operating system installation, structured data like HTML or CSV, and a sociology workshop to facilitate classroom debates on digital impacts. The training included working on machine systems, various operating systems, hardware formats, image and text formats, and exploring programming languages such as HTML, superme, and MD. The session was described as very enriching, with diverse colleagues and great personal motivations.