Two Great SharePoint 2007 Resources
If you're just starting to get your hands around SharePoint 2007, here are two great resources to add to your learning kit.
SharePoint Server 2007 SDK: Software Development Kit and Enterprise Content Management Starter Kit - (http://www.microsoft.com/downloads/details.aspx?familyid=6D94E307-67D9-41AC-B2D6-0074D6286FA9&displaylang=en)
The Microsoft Office SharePoint Server 2007 Software Development Kit (SDK) contains conceptual overviews, programming tasks, code samples, references, and an Enterprise Content Management (ECM) starter kit to guide you in developing solutions based on Microsoft Office SharePoint Server 2007.
Look especially at the custom activities white paper and associated code samples. Good stuff!
CSS Reference Chart for SharePoint 2007 (Microsoft Office SharePoint Server 2007 and Windows SharePoint Services v3) - http://www.heathersolomon.com/content/sp07cssreference.htm
The following CSS reference guide highlights the major styles used in MOSS and WSS v3 sites. The guide is organized by area of the page and include the style name, function, CSS file name and approximate line number and a sample screenshot of the style location on the screen. Use these guides to identify styles that can be overridden for your custom branding and installation or to quickly reference style name and CSS information for customization.
Heather Solomon provides an invaluable guide to facilitating the branding process. Print this and pin it next to your desktop!