This theoretical and practical work, which is easy to understand for pupils in the seventh year of basic education, will also serve as a compendium for teachers wishing to learn computer science, as it conforms to the national curriculum for primary, secondary and technical education in the Democratic Republic of Congo. In this book, we have focused on notions such as: mastering general computer concepts, presenting the computer, discovering computer peripherals, Windows fundamentals, directory files, search engine browsers, different websites, using e-mail, attachments and handling MS Word. If you follow this book through to the end, you'll be well on your way to the sixth year of the humanities, and the concepts covered in the fourth year will no longer be a problem. We look forward to receiving your comments, criticisms and suggestions for improving this book, and encourage every school to acquire a copy.