[The book] presents the basics of PC operation through step-by-step lessons and dozens of exercises. This simple, illustrated approach helps students learn DOS operations and commands quickly and easily. Each exercise demonstrates essential DOS concepts. Then, every chapter ends with an effective review section which includes simple quizzes, two to three short projects, and two long project. Plus, an easy command reference and an error message directory build confidence. All these elements combine to provide a second-to-none building block approach for learning DOS ... Step-by-step lessons on: Copying, moving, renaming, and deleting files. Making PCs more efficient with directories. Protecting PC data from viruses. Securing data on the hard disk. Avoiding common errors.-Back cover.