What else you can do with your mouse

which helps you save time, of course.
http://news.yahoo.com/blogs/upgrade-your-life/hidden-powers-mouse-164928637.html
http://news.yahoo.com/blogs/upgrade-your-life/8-microsoft-word-shortcuts-probably-don-t-know-200710557.html

Click Tricks
You surely know that double clicking highlights a word, and you might even know that triple clicking highlights a paragraph. But have you ever wanted to select a column of text in a Word document, without getting all the text to the left and right of it? Here's how you can: Hold down the alt and left mouse button (on a Mac, option-left mouse), and drag the cursor over the section you want to select. The coolest thing about this trick is that the text you are selecting does not even need to be formatted as a column for this to work.