The .NET Framework is Microsoft's Managed Code programming model for building applications on Windows clients, servers, and mobile or embedded devices. Microsoft's .NET Framework is a software technology that is available with several Microsoft Windows operating systems. In the following sections describes , the basics of Microsoft .Net Frame work Technology and its related programming models.

VB.Net is a simple, modern, object-oriented computer programming language developed by Microsoft to combine the power of the .NET Framework and the common language runtime with the productivity benefits that are the hallmark of Visual Basic.

This tutorial will teach you basic VB.Net programming and will also take you through various advance concepts related to VB.Net programming language.

According to Microsoft, "ASP.NET is a technology for building powerful, dynamic Web applications and is part of the .NET Framework". This tutorial will teach you ASP.NET from scratch, and no knowledge of any kind of serverside scripting is required. Basic HTML and CSS knowledge is preferable. Having worked with Classic ASP or PHP won't give you much of an advantage, since ASP.NET is a whole new way of doing things. 
.NET is language independent, which means you can use any .NET supported language to make .NET applications. The most common languages for writing ASP.NET applications are C# and VB.NET. While VB.NET is directly based VB (Visual Basic), C# was introduced together with the .NET framework, and is therefore a some what new language. Some people call C# "the .NET language", but according to Microsoft, you can do all the same things, no matter if you're using C# or VB.NET. The 2 languages are not that different, and if you have used one of them, you will have no problems at all learning the other. In this tutorial we will use C#.