My Book - basics of BI

http://www.amazon.com/Foundations-Server-2005-Business-Intelligence/dp/1590598342

About SQL Reporting Services and SharePoint integration

http://blogs.digineer.com/blogs/jasons/archive/2007/03/01/reporting-services-sharepoint.aspx

http://harbar.net/archive/2007/02/24/In-a-nutshell-Reporting-Services-Addin-for-SharePoint-2007.aspx

Reporting Services add-in for SharePoint (requires SQL Server 2005 SP2 first)

http://www.microsoft.com/downloads/details.aspx?FamilyID=1e53f882-0c16-4847-b331-132274ae8c84&DisplayLang=en

Configuring Reporting Services for SharePoint 3.0 Integration

http://msdn2.microsoft.com/en-us/library/bb326356.aspx

Development Tools and Techniques for Working with Code in Windows SharePoint Services 3.0

Part 1: http://msdn2.microsoft.com/en-us/library/bb530302.aspx
Part 2: http://msdn2.microsoft.com/en-us/library/bb530301.aspx

Performance Point Server Overview

http://www.microsoft.com/bi/products/performancepoint-overview.aspx