I installed MonoGame.Framework and followed the instruction given in these two sites
But having an error as soon as I add Android or IOS project to the solution, can be seen in the screen shot.
I have 6.1.3 (Build 19) with all updates. This is my first try with Xamarin for Game Development.
.csproj: /Users/Ali/Projects/WalkingGame/WalkingGame.Android/WalkingGame.Android.csproj could not import "$(MSBuildExtensionsPath)\MonoGame\v3.0\MonoGame.Content.Builder.targets" (WalkingGame.Android)