there is no project.json, global.json … etc on .NET Core Solution with Visual Studio 2017

The .NET Core was changing its internals with a slightly fast pace (although it seems it has settled down now), thus making many of the tutorials out there obsolete. Since mid-2016, the project.json has been dumped in favor of "your-app-name".csproj file.

If you are following a tutorial or a book, then for anything you are supposed to write in the project.json, you must now write it in the csproj file with a slightly different format.

If I have to mess with project.json when following tutorials, I use this official migration guide.