Hello world! I'm talking about creating a console application in C#. I'm going to select file new project, For most of the projects in this book [course], We're selecting windows form app. But a lot of the references in Microsoft show you some code in the console app, so I'm just going to create that, and then you're going to say OK down here. and when it opens there's no form or anything like that. We're going to just write our code in main. So I'm going to type system. (dot) and then Console, double click that . (dot) WriteLine "Hello world" And this red squiggle indicates that we need a semicolon (;), If I just run this right now, You, you won't see anything it just disappears immediately. So, I'm also going to type System.Console dot (.) ReadKey and this has an argument true. What that's going to do is just pause long enough for us to type in a key, so let's run that. And there's the console application that says hello world, and then I can just press any key to end that. And that's it!