These training videos give a quick start with .Net Framework which is a software development framework from Microsoft and being heavily used in Software Industry by millions of software developers. It allows software developers to use multiple programming languages in the same application. A software developer can develop application in an easier way without taking care of the performance and memory leakage issues because they are being taken care by the framework implicitly.
Anyone one who wants to start learning any .NET compliant language like C#, VB.NET should learn .NET framework to know the features which will help them to create applications more effectively.