To get you started with SharePoint
Overview of SharePoint Capabilities
Getting Started With SharePoint (SharePoint Help Landing Page)
If you are familiar with 2007, you may find the following resources useful
What’s New in SharePoint 2010
What’s new for developers in SharePoint 2010
SharePoint 2010 Edition Comparison
For more specifics individual areas of SharePoint
Security and Authentication
Out Of the Box Webparts Video
The SharePoint Ribbon
Metadata and Taxonomy
BCS
Records Management
Business Intelligence
Sandbox Solutions
Enterprise Search
Claims Based Authentication
Enterprise Content Management
Great resources for further research, help and training
Technical Reference for SharePoint 2010
Getting Started with SharePoint 2010
Getting Started developing on SharePoint 2010
Visual How To's on SharePoint 2010
Resources For IT PROS
Resources for Developers
SharePoint 2010 Developer Center
Getting Started Developing on SharePoint 2010
Channel 9 SharePoint Videos
Learn more about InfoPath
Features and Benefits of InfoPath 2010
Getting started with InfoPath 2010
Developing with InfoPath 2010
Integrating InfoPath 2010 Forms with the SharePoint 2010 Data Connection Library
Customizing SharePoint List Forms in InfoPath 2010