Need a quick start code (or a complete guide) for ASP.NET Web Application (.NET Framework 4.6), Web Form Visual Basic

I am trying to add auth0 login to a legacy app. It used ASP.NET Web Forms with visual basic, .NET Framework 4.6. Could anyone provide me with a quick start code or, sample application which uses visual basic, or step by step guide.
(*Language must be visual basic)
Your helps are highly appreciated.