Everybody knows Microsoft Word. It's on almost every PC in the world and fair few Macs as well. However, a lot of users have picked up bad habits, things that detract from the usefulness of the document being created. This article looks at the most common basic errors among Microsoft users.

* Are you ever guilty of pressing the Return key at the top of a document to move the cursor down, perhaps when creating a document to be printed on your company stationery? If so, this means that you are creating a document with unwanted characters at the start. Much better to click on File - Page Setup and change the top margin (in Word 2003) or click on Custom Margins in the Page Layout tab of the Word 2007 ribbon.

* Leaving two spaces after the period which ends each sentence is another common error among users. In fact, one space is fine with modern typefaces since they are proportionally spaced (e.g., the letter "w" takes up more space than the letter "i"). The two space habit is a throwback to the days when people were using typewriters with monospace typefaces such as Elite and Courier.

* A lot of Word users also like to press the Return key twice after each paragraph. This tends to create too much space. It's better to use just one Return then adjust the paragraph spacing by choosing Format - Paragraph (in Word 2003 and earlier) or clicking on the Page Layout tab (in Word 2007) and entering the desired amount in the box marked Spacing After.

* People who have never had any formal Microsoft Word training can perhaps be forgiven for not fully understanding how tabs work. You will even see some users attempting to align elements by using the space bar and, of course, when they print the document, nothing is properly aligned. As experienced users will know, the Tab key should be used; not the space bar.

* Having identified the Tab key as the correct one to use to create columns, many Word users just press the tab key to tab along to the next default tab. The number of times the Tab key is pressed will thus vary, depending on the length of each piece of text. It is much better to set one's own tabs by clicking on the Word ruler. This means that on each line of text, the tab key will be pressed the same number of times between columns.

* A lot of newbie Word users will always format their documents, even long ones, either manually or by using the Format Painter. The best way to format text in long documents is to use Microsoft styles. Each style has multiple attributes associated with it which are applied automatically to any text formatted with that style. In addition, if the attributes of a style are changed, all text in that style is updated throughout the document.

* Word has a number of AutoCorrect options which can seem intrusive to new users and who complain about them without attempting to switch them off. To modify Word's AutoCorrect and other settings, choose Options from the Tools menu (Word 2003/2002 etc.) or choose Word Options from the Office button in Word 2007.