Download eBook First Look: Microsoft Office 2010 for free offered by Microsoft Press.  Here is a screenshot for your reference.  For those who are technically adventurous, Microsoft Office 2010 Beta is available for free.  Given that this is pre-release software in beta form, it is not recommended as the primary home or business PC.  Reviewing the "Here's what you need to know" section is highly advisable. The beta version will expire in 10/2010.