Coding Guidelines
Presently I am working on - XML Enhancement in .NET Framework. This is a big chapter. Slowly and gradually I am going too deep. I have another two interests. The Best Practices for .NET Application development and System Architecture. It's also true both of these two are closely associated to each other. Also I love working with SQL Server & Oracle too.
Today I found one good link for best practices - Coding Guidelines.
http://blogs.msdn.com/brada/articles/361363.aspx from Brad Abrams [Design Guidelines, Managed code and WinFX]
I will explore more onto this...
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconnetframeworkdesignguidelines.asp
http://www.tiobe.com/standards/gemrcsharpcs.pdf