The following are some suggested supplemental references to further your retraining effort.
Regular Expressions with .NET , by Dan Appleman (Desaware, 2002):
http://desaware.com/Ebook3L2.htm.
.NET Magazine:
http://www.fawcette.com/dotnetmag/
Visual Studio Magazine:
http://www.fawcette.com/vsm/
XML & Web Services Magazine:
http://www.fawcette.com/xmlmag/
.NET Framework Class Library:
http://msdn.microsoft.com/library/en-us/cpref/html/cpref_start.asp
Dr. GUI .NET #1: Introduction to .NET Framework Types and Other Classes:
http://msdn.microsoft.com/library/en-us/dnguinet/html/drguinet1_update.asp
Microsoft Community (discussion groups, e-newsletters, and so forth):
http://communities2.microsoft.com/
MSDN:
http://msdn.microsoft.com/