With the official release of Office 2010 already been posted for MSDN and TechNet subscribers, and the impending general availability (GA) of Office 2010 in June, Microsoft has also released a series of Office 2010: Product Guides e-books for each and every Office 2010 application programs.

Office 2010 Product Guides

The Office 2010 product guides provide an overview of what’s new and improved in the 2010 versions of Microsoft Office programs and a deeper insight look at benefits across all Office 2010 programs, as well as Office Web Apps and Office Mobile 2010. With the Office 2010 product guides, readers can read an at-a-glance overview, a closer look at many new and improved features, and instructions to help users find the features they want quickly and easily. There is also additional information and resources in some of the guides for power users, IT pros, and developers.

The Office 2010 product guides are available in both .PDF and .XPS formats for the following Office 2010 components:

Microsoft Access 2010 Product Guide
Microsoft Excel 2010 Product Guide
Microsoft InfoPath 2010 Product Guide
Microsoft Office 2010 Product Guide
Microsoft Office Mobile 2010 Product Guide
Microsoft Office Web Apps Product Guide
Microsoft OneNote 2010 Product Guide
Microsoft Outlook 2010 Product Guide
Microsoft PowerPoint 2010 Product Guide
Microsoft Publisher 2010 Product Guide
Microsoft SharePoint Workspace 2010 Product Guide
Microsoft Word 2010 Product Guide

The whole Office 2010 product guides are available for free download on Microsoft Download Center.

Update: Office 2010 official downloads and resources