SharePoint Hub

Chris O 'Brien's blog on SharePoint

http://www.sharepointnutsandbolts.com/2007/08/creating-deploying-and-updating-custom.html

Helpful link on InfoPath

http://msdn.microsoft.com/en-us/library/cc162745.aspx

SharePoint Developer Interview Questions

http://www.sharepointsecurity.com/blog/sharepoint/sharepoint-2007-development/sharepoint-developer-interview-questions-answers/

LINQ

Useful Links on LINQ

LINQ          http://www.codeproject.com/KB/vista/LINQ_1.aspx

DLINQ        http://www.codeproject.com/KB/vista/LINQ2.aspx

XLINQ        http://www.codeproject.com/KB/vista/LINQ_3.aspx