SharePoint Services 3.0 Level 2

Sharepoint Tutorials
http://www.frontpages-web-hosting.net/sharepoint-hosting/free-sharepoint-tutorials.asp

www.sharepointsoft.com/

Configuration
http://technet.microsoft.com/en-us/library/cc288936(TechNet.10).aspx

Sharepoint Security from technet ezine
http://technet.microsoft.com/en-us/magazine/ff625837.aspx

Developing webparts

http://www.datasprings.com/Resources/ArticlesInformation/Sharepoint2007CustomWebParts/tabid/775/language/e-US/Default.aspx


Reskin and customization
http://www.heathersolomon.com/blog/
Downloadable books for Windows SharePoint Services 3.0

http://technet.microsoft.com/en-us/library/cc288773(TechNet.10).aspx

http://www.15seconds.com/issue/040511.htm

PDF Info
http://bloggingabout.net/blogs/harold/archive/2008/10/02/index-pdf-documents-on-sharepoint-using-adobe-pdf-ifilter-9.aspx