Microsoft has released a bunch of Guides for the Office 2010 suite and they are now available for download.
The Office 2010 product guides provide an overview of what’s new in various Microsoft Office programs and a deeper look at benefits across all Office 2010 programs, as well as Office Web Apps and Office Mobile 2010.
Microsoft Office 2010 offers powerful new ways to deliver your best work—at the office, at home, or at school. Designed to deliver the best productivity experience across the PC, phone, and browser, Office 2010 helps you capture your ideas more creatively, work more easily with others, and gives you the flexibility to get work done when and where you choose.
Download Page: Microsoft Office 2010 Product Guides