Step 1: Start a New Paragraph
Each time you press Enter, you start a new paragraph. Press Enter to end short lines of text, to create blank lines, and to end paragraphs. Don't press Enter to start new lines within a paragraph: Word wraps the lines for you. 
Step 2: Indent with the Tab Key
Press the Tab key to indent the first line of a paragraph. If you keep pressing Tab, you increase the indent one-half inch at a time. (To indent all the lines in the paragraph instead of just the first one, right-click in the paragraph and click Paragraph on the shortcut menu. Next, click the Indents and Spacing tab, reset the indentation settings, and click OK to apply them.) 
Step 3: Type Repeating Characters
To type the same character repeatedly, hold the key down. Word automatically converts some repeated characters into different types of lines, as shown here. If you type three or more asterisks (*) and press Enter, for example, Word replaces them with a dotted line. Do the same with the equal sign (=) for a double line, the tilde (~)for a wavy line, the pound (#) symbol for a thick decorative line, or the underscore (_) for a thick single line. 
Step 4: Type Uppercase letters
To produce all uppercase letters without having to hold down the Shift key, press the Caps Lock key once before you begin typing. Press the Caps Lock key again when you're ready to switch caps off. Caps Lock affects only the letter keys, not the number and punctuation keys. Therefore, you always have to press Shift to type a character on the upper half of a number or punctuation key, such as @ or %. 
Step 5: View Nonprinting Characters
Every time you press Enter, the Spacebar, or the Tab key, Word marks the spot in your document with a nonprinting character. You can't see these characters unless you click the Show/Hide button in the Standard toolbar. You can use this button to check whether you accidentally typed an extra space between two words or to see how many blank lines you have between paragraphs. To turn Show/Hide off, click the button again. 
Step 6: Fix Mistakes
Press the Backspace key to delete characters to the left of the cursor. You can also click inside a word and press the Delete key to remove characters to the right of the cursor.