• NLog.Extensions.Logging - Provides AddNLog() to register NLog as LoggingProvider for Microsoft.Extension.Logging. And supports NLog config in appsettings.json.
• NLog.Extensions.Hosting - Provides UseNLog() to register NLog as LoggingProvider for Microsoft.Extension.Hosting. If running ASP.NET Core, then it is recommended to instead use NLog.Web.AspNetCore-nuget-package.

• NLog GetCurrentClassLogger and Microsoft ILogger
• NLog properties with Microsoft Extension Logging
• How to use structured logging
• NLog configuration with appsettings.json
• NLog Console vs AddConsole
• Capture System.Diagnostics.Activity.Current with NLog

Note if just wanting to use NLog on .NET Core without Microsoft ILogger-abstraction, then just use the standard NLog-nuget-package.

• Getting started with ASP.NET Core
• Getting started with .NET Core Console application
• Using NLog with appsettings.json

For configuration options: http://nlog-project.org/config/

For general usage of NLog: NLog wiki