To get started with Linux you may use WSL that is the Windows SubSystem for Linux that is built into Windows10.

Make sure you have the feature on ; Turn windows features on or off -> Windows Subsystem for Linux

Once you have it on you need a Linux install; we use Ubuntu (20.10 at the time of writing)

wget https://packages.microsoft.com/config/ubuntu/20.10/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb

You then install .net core (we use .net core 3.1)

sudo apt-get update; \  
  sudo apt-get install -y apt-transport-https && \
  sudo apt-get update && \
  sudo apt-get install -y dotnet-sdk-3.1

This is a good overview: https://weblog.west-wind.com/posts/2017/apr/13/running-net-core-apps-under-windows-subsystem-for-linux-bash-for-windows