Silverlight enables development of the next generation of Microsoft .NET-based media experiences and rich interactive applications (RIAs) for the Web.
Silverlight is delivered as a cross-platform and cross-browser plug-in that exposes a programming framework and features that are a subset of the .NET Framework
and Windows Presentation Foundation (WPF). This one is the offcial Silverlight home from Microsoft and here you will find a wealth of information, tutorials,
guides, articles and many other things related to Microsoft Silverlight.