Development Tools and Techniques for Working with Code in Windows SharePoint Services 3.0, by Patrick Tisseghem, is now published on MSDN.
Part 1 : Learn the skills you need to develop for Windows SharePoint Services 3.0, about the differences from traditional ASP.NET development, about the required development environment, and the steps to build a Windows SharePoint Services solution with Visual Studio 2005 Extensions for Windows SharePoint Services 3.0
Part 2 : Explore Windows SharePoint Services solutions, solution architecture, and techniques for creating, deploying, maintaining, and upgrading Windows SharePoint Services solutions.