The C# team posts answers to common questions and describes new language features
Learn about the upcoming changes to the Help Viewer planned for Visual Studio 2010 SP1. Paul O’Rear, a Program Manager on the Library Experience team, describes the changes planned and demonstrates the new functionality of the viewer in an early build of Help Viewer 1.1.
See Microsoft Help Viewer – Updates Planned for Visual Studio 2010 SP1
You can learn more in The Story of Help in Visual Studio 2010
where to manual download help on Visual Studio C# Express 2010?