Below are a few quick resouces to help you in your XNA Development.

Microsoft:

• XNA Creator's Club {visit}
• Xbox Developers Programs {visit}
• XNA Quick Start {visit}
• Microsoft Casual Games {visit}

Software:

• XNA Framework 3.0 {visit}
• Microsoft Visual C# Express 2005 {visit}
• Microsoft Visual C# Express 2008 {visit}

Contests:

• Dream-Build-Play 2008 Challenge {visit}