.NET is Microsoft's latest and most ambitious
attempt at creating a a multi-language object-oriented development and
execution system for enterprise-level applications.
Wintellect: These people wrote a number of the Microsoft
Press books on .NET. (home page: http://www.wintellect.com )
Look for free stuff buried amongst the pay stuff. Free
tutorials for free registration.
411 ASP.NET Resource Directory: A large collection of
links to resources, including code snippets and tutorials: http://www.411asp.net/