These samples demonstrate many of the new features available with Visual Basic 2008 and the .NET Framework 3.5 including hundreds Language Integrated Query (LINQ) samples. These samples are broken down into the following areas:
Application Samples
These samples use various features to make end user applications like a threading application or a game or showing how to use Microsoft Excel from within VB
Data Samples
These samples show various data features like binding to databases and OCS
Language Samples
These samples show various language features like API calls and generics. These also include a comprehensive list of beginner and advanced LINQ samples
Server and Component Samples
These samples show how the VB Language can access component services like WMI and comports
Tablet PC Samples
These samples show how the VB language can be used for applications like speech recognition or text recognition
WCF Samples
These samples show how WCF (Windows communication foundation) can be used to make and consume services
Winform Samples
These samples show various winforms applications like GDIText and combo box examples and user controls
Full Article – http://code.msdn.microsoft.com/vbsamples