A great place to go for technical details of most any internet language/standard is http://www.w3schools.com/. They have tutorials, lessons on syntax, and listings of commands, functions, and namespaces. Otherwise for ASP.NET, most of it is done via the language of your choice (VB, C#, etc.), with the addition of Application and Session variables.
I hope this provides some help. Otherwise if you have any questions I know quite a bit of ASP.NET, C#, and VB so feel free to ask.