The above is the error I got at the circled stage. I have downloaded Visual Studio 2017. I got the error that .NET Framework v4.5 was wrong or missing references or whatever, so I uninstalled v4.6.2, installed v4.5, only to have it tell me to update, so I did back to v4.6.2. Then the error came up again.
What is going on? First time using github and doing this manual stuff, help please. Thanks for anything.