Computer as a great machine has many applications in our world. This book starts from ground zero to teach you on how you can use a computer. It is written in a way that you can learn the use of computer easily. As a beginner or senior who is not tech savvy, you will learn all you need to increase productivity. If you got a new job or hoping to get a job where the use of computer applies, this book will help you to be up and running. The book is written with illustrations from a computer running the latest Windows Operating System, Windows 11. So, if you are looking for a book that will help you learn how to complete some tasks in Windows 11 OS, it can still help. It goes further to explain how to use the major Office apps, Microsoft Word and Excel. Some of the areas covered in this book are: Fundamental knowledge on computer What an operating system is Computer keyboard keys How to give internet access to computers Apps and adding them to favorite folder Web browsers and completing some tasks with them Emails and communications How to use Microsoft Word How to use Microsoft Excel, and more.