How Do I Customize Styles in OneNote 2010?
Actually....you can't. You can customize the Normal style (which is what you're usually using when you type in OneNote), but none of the other styles can be customized and you can't add your own.
It's a new feature in OneNote 2010 and not very robust yet, but we're hopefully for a richer implementation in the next version.
side of the screen? Click the "Dock" icon on the View tab of the
ribbon or on the QAT. Want to move it to a different side of the
screen? Just drag and drop!