Microsoft made it very easy to get started. We need 2 prerequisites to get it up and running. Download the following installers:
Installing .NET Core
Select your preferred Hard Drive
Enter your password
Installing Visual Studio for mac
Click on the big circle
Accept warning "application downloaded from the internet"
Thank you for downloading Visual Studio
Some features require Xcode
These features are related to Xamarin and building iOS apps. You can safely skip this. If you do need them you can rerun the installer and select them afterwards.
What would you like to install
We only need Visual Studio and the tools. I already installed Android and iOS on my machine.
Downloading and installing...
Enter your credentials
Start Visual Studio for mac
Click the purple "New Project..." button underneath Recent.
Choose a template for your new project
Select .NET Core followed by the project type you prefer. In this example "ASP.NET Core Web App"
Configure your new ASP.NET Core Web App
Start the application
Just press the 'Play' button next to Debug at the top left.