This book assumes you know little to nothing about computers. It will take you from ground zero to a functional user. The scope is well within the default software that comes with Microsoft systems. There are plenty of color pictures diagrams and explanations of how and why.
The only thing that you need to be aware of as with all computer books is the technology changes so the speed of processors and the size of drives may change before you get this book.
Some books claim that they are in plain English this one is. It uses the margin gimmick to tell you what hot tips are don't forget tips and beware warnings. You don't need the margins but they're comforting to have in the book.
The book is well designed be able to those step-by-step from front to back however if you need a little extra help or think you have missed something there is an index in the back that will carry you back to that particular location.
I suggest that even if you do know how to use computers that this book may tell you how to use computers more efficiently or clear up anything that you might have a misconception about.
So don't let the title or the sophomoric approach turn you off and miss something that can be useful.