Last years a great number of technologies came up to the world of .NET platform: nowadays we have the full (classic) .NET framework with CLR as a runtime, Mono with its own runtime, .NET Core with Core CLR, WinRT, UWP and Xamarin, a new JIT compiler RyuJit, .NET Standard, PCL, .Net Native, new Roslyn compiler with open API, NuGet based project management. God’s sake! It’s so simple to get lost in that ocean of technologies. You need to understand the overall picture to feel comfortable today. Didn’t you feel like a small fish in the ocean last time? Well, I did. I questioned myself, “what the hell is going on around me?” I didn’t quite understand the directions in which technologies develop. I didn’t know what to expect, what to learn next. In such situation, you feel helpless. And what we are going to do in the course is that we’re going to eliminate this nasty feeling of being helpless by learning all the most important notions in the modern .NET platform.