Did you know that you can apply heading styles using keyboard shortcuts?
Doing so is much faster than digging around in menus to find the Styles menu or the Styles Palette. This trick is especially helpful for formatting ebooks. Here's how it works in Word 2010:
Click in the heading you want to apply a style to, or select the heading:
Then choose from the following keystrokes:
Heading 1: Ctrl + Shift + 1
Heading 2: Ctrl + Shift + 2
Heading 3: Ctrl + Shift + 3
Get the idea?
If you're on a Mac, try the Command + Opt key instead of the Ctrl + Shift.