This is my fourth book and covers the latest operating system, Windows 8.1. It is again written in plain English with no jargon. It has clear illustrations to help you every step of the way. The opening chapters are aimed at people who are new to computers and cover the basics i.e. your computer, monitor, keyboard functions, how to use your mouse and the importance of anti-virus software. The following chapters show you how to use Windows 8.1, using the Internet, Email, Photos, Contacts and how to back up your work. There is also a chapter on files and folders. Although this book is aimed at beginners, I am confident it will also benefit those who are computer literate but who are not familiar with Windows 8.1