What's New?
New features in 2010:
Gather, organize, and search
Sharing and universal access
Organize page tabs better:
Multi-level subpages
Collapse subpages
Jump to any page with a quick search 
Dock to Desktop
Link to other notes, like a wiki
Quick Styles for making headings
Auto-link notes to Web pages and documents
Insert Math
Notes on Outlook Tasks
Send content to any section in OneNote
Access from anywhere:
Share on the Web
View and edit in a browser
Sync notes to OneNote Mobile
Share notes:
Unread changes are highlighted
See author initials
Version history
Find recent edits
Find edits by author
Faster sync with SharePoint
Examples:
Organize topics using subpages
Drag tabs to indent and organize pages within a section.
Keep notes visible during other tasks
OneNote will  link notes to documents and Web pages you view.
View >
What's new in a shared notebook?
Unread changes are shown automatically.
What notes are teammates working on?
Share >
Select location when sending to OneNote
When sending from  Outlook or Internet Explorer
Link to information for yourself and others
Insert >
or type 
[[page name]]
More Resources Online
Videos, templates, training, help, and discussion groups.
Microsoft® OneNote® 2010 Guide Notebook
Copyright © 2009 Microsoft Corporation. All rights reserved.
The example companies, organizations, products, domain names, e-mail addresses, logos, people, places, and events depicted herein are fictitious. No association with any real company, organization, product, domain name, email address, logo, person, places, or events is intended or should be inferred.