Optima Digi Track – An Activity-Based Computer Book for Class 9 is an interactive and student-friendly textbook designed to strengthen computer skills in Class 9 learners through hands-on activities. It covers key concepts such as computer fundamentals, operating systems, word processing, spreadsheets, presentations, basics of programming, internet safety, and digital citizenship, presented with practical exercises, projects, and fun tasks to make learning computing engaging, relevant, and application-oriented for students.