These are the Silverlight Articles on the Technet Wiki

Consumer / General

• Trouble Shooting Installs
• What is Silverlight
• Release History

Development

General

• StrikeThrough
• Silverlight Platform
• No Need to BringIntoView
• How to Programmatically Create a Silverlight Brush
• Bing Maps for Silverlight - Customized Tooltip for Pushpins
• Silverlight ToolKit

Business Intelligence

• Connecting to an SSAS Cube using Silverlight
• Overview of New Microsoft BI Suite features
• Power View Overview
• Creating a Widget for Operations Manager Dashboard - Walkthrough #1 - Custom UI Control
• Creating a Widget for Operations Manager Dashboard - Walkthrough #2 - Creating a Data Provider
• Secure Silverlight Applications with Claims-Based Authentication in Azure – Lessons Learned – Part 1
• Secure Silverlight Applications with Claims-Based Authentication in Azure – Lessons Learned – Part 2
• SharePoint 2010: Client Object Model with SilverLight 

Windows Phone

• Windows Phone: Silverlight animation with Expression Blend (and no code)
• Windows Phone: 2D games using Silverlight - implementing the game loop

Silverlight for Windows Embedded

• Silverlight for Windows Embedded (Windows Embedded Compact 7)
• Adding a Title Bar to an Application for Silverlight for Windows Embedded

See Also

Since Silverlight is XAML based it is very similar to WPF and Windows App Store applications. A number of articles on other XAML technologies offer techniques which can also be used in Silverlight.  

• Easy MVVM examples (in extreme detail)
• Windows Phone: States and transitions basics QML vs. Silverlight
• MVVM Model View ViewModel Part - 1
• WPF: Tips - the Mystery of the Lost Binding
• WPF: Dynamic XAML
• Communicating Between Classes

Search Silverlight tag on Technet Wiki

• Silverlight tag

Other Resources

• Silverlight - Wikipedia
• Google will kill Microsoft Silverlight in Chrome by disabling NPAPI plug-in