Overviews and beginnings:
The .NET Framework and ASP.NET
A slew of Web links to useful ASP.NET tips and tricks
Microsoft ASP.NET development center
A journey to ASP.NET would surely start here. And the latest betas there reside.
Beginner Resources: ASP.NET: Best Web Links
First steps toward ASP.NET expertise.
VBnet Visual Basic Developers Resource Centre
Part of MVPS program, VBnet site provides Intermediate and Advanced Win32 API code for VB developers.
"Visual Basic Resource"
Visual Basic Resource offers tutorials and programs.
Moving from ASP to ASP.NET
ASP.NET introduces a real component model, that is the first place to start when making the leap from ASP to ASP.NET.
Best way to build out ASP.NET
A reader is just getting started with ASP.NET, how do they avoid DLL-migration hell?
What about state in ASP.NET?
State eludes Web apps. It can be tough to get a handle.
Microsoft ASP.NET development center
A journey to ASP.NET would surely start here.
ASP Controls
Pass your server control values to other pages in ASP.NET
Date and time control for ASP.NET
Accessing a control on the server side
Mike Murach book chapter: How to develop user controls
ASP Forms
Converting Access apps and forms to ASP.NET
Validation
Client side validation in ASP.NET
ASP data handling
Sharing session data in ASP.NET applications