.NET course is based on Microsoft development platform. Some of the initial concepts of C# programming as data types, instructions help the student a costless earning curve, that is usually a big problem dealing with starting to program a new programming language. The following modules fix all the concepts learned in the first modules complementing them with ASP.NET, ADO.NET and web services with a clear orientation to Internet programming but without neglecting classical windows applications in local mode. All the parts of this course are developed with code examples and exercises.