This page provides some support for the readers of A Natural Introduction to Computer Programming with C#.
You should install the free Community edition of the Visual Studio. This way you will get everyting related to the .NET Framework and the free C# compiler. Use Google to find where to downloads are available, and ensure that you select the C# language and .NET before download.
All the source programs presented in the book are available through the links in the book page.
Here is some information related to downloading free program editors.
IC8, the simulator program for the imaginary computer discussed in Chapter 4 of the book, can be used through the icon on the main page.
Here you find some oldish information related to the use of The Microsoft Visual Studio, which is an integrated program development environment in which you can develop and compile C# programs.