1. Learn Microsoft BI
Learn Microsoft BI is an excellent website which provides free videos and forums about the Microsoft BI stack. This is primarily a learning resource and includes training material and focused discussion on SQL Server Integration Services, SQL Server Analysis Services, SQL Server Reporting Services, PerformancePoint Server, ProClarity, SharePoint, and Excel. While the videos and forum participation are free, you'll need to create an account.

2. University of Michigan Business Intelligence
An inspiring Business Intelligence resource is evolving at the University of Michigan. They have embraced Business Intelligence comprehensively in support of what they call 'Advanced Academic Analytics'. Budget and Finance, Recruitment, Fundraising, Government Relations, Admissions, Grants as well as many more critical business process areas are being better managed through superior access to information.

3. Dashboard Insight
Dashboard Insight was designed to provide a comprehensive online resource for "all things dashboard!" What results is an community that acts as both an educational resource as well as a focal point where business intelligence solution decision makers can consider the plethora of vendors and products in this space.