This document provides instructions for selecting text in a document using either a mouse or keyboard. It explains that text can be selected by dragging the mouse across it while holding the left button or by pressing the shift key while using arrow keys to move the cursor. Once selected, text can be edited by changing formatting, moving, copying, or making it bold. Keyboard shortcuts are also provided to quickly select portions of text. The overall purpose is to teach the reader how to highlight and manipulate selected segments of text.