Installing Visual Studio 2019 for Mobile Development with .NET & Xamarin

In this video, I'll show you the steps to build your first Android application in Visual Studio 2019 with C#, .NET, and Xamarin. We will see how to build a basic app and then compile and deploy using Android emulators.
Show Links:
Useful Links:
Need someone to test this Visual Studio 2019 Tutorial
Does not work when I try it. it's only a 4 minute tutorial. I must be missing something.
I will describe my environment. Windows 10 Pro. Visual Studio 2019 Community
I chose the single page template.
I followed the tutorial exactly. Tried to run. Got this error message:
1> No way to resolve conflict between "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" and "mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e". Choosing "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" arbitrarily.
Please resolve.
The title is not clear enough to state that this is with xamarin forms which approach is different from xamarin android.
I installed VS 2019 Ent and when I try to create an Android emulator I get the message:
Could not start emulator
Could not launch the emulator.
Please file an issue by choosing "Report a Problem" in the Help menu, and attach your logs.
Error message: "An attempt was made to load a program with an incorrect format."
This makes it hard to create any mobile apps. Any insight to fixing this would be greatly appreciated. The video made it seem so simple with Xamarin.
My VS2019 experience is no where as good as this.
Android Emulators fail to boot up, hang, (wait tem minutes, still not booting!) random and uninformative Android emulators.
"starting Emulator", "Emulator xxxx cannot be started", "runtime checks completed", NuGet package restore cancelled" "build has ben cancelled"
I do have Hyper V working OK, but Android development and Emulation is still a hit and miss affair on VS2019.
Horrible
Microsoft u make learning Xamarin so hard. Visual Studio always error.
Reducing App File Size In Xamarin Forms is too large
Visual studio Xamarin form Android only project. Almost spend 10 hours. No Emulator show my hello world app. this is bad.
Check this link that says Visual Studio Emulator for Android is no longer supported since vs 2017
https://docs.microsoft.com/en-us/visualstudio/cross-platform/visual-studio-emulator-for-android?view=vs-2017
I followed along and everything worked for me. However, I used my own phone in developer/USB debugging mode to test it. I have successfully used the emulator as well. I just need to know how to get it from VS to an apk.