Ctrl+A selects all text, Ctrl+B makes text bold, and Ctrl+C copies selected text. Common shortcuts include Ctrl+D to duplicate text, Ctrl+F to find text, and Ctrl+G to go to a specific page or line. Text formatting shortcuts are Ctrl+I for italics, Ctrl+K for hyperlinks, Ctrl+U for underlining, and Ctrl+X to cut text. Document management shortcuts contain Ctrl+N for new sheets, Ctrl+O for opening, Ctrl+S for saving, and Ctrl+W for closing.