Bing found the following results
  1. w3schools.com
    https://www.w3schools.com/cs

    C# Tutorial (C Sharp) - W3Schools

  2. microsoft.com
    https://learn.microsoft.com/en-us/dotnet/csharp/tour-of-csharp/tutorials

    Introduction to C# - interactive tutorials - C# | Microsoft Learn

  3. microsoft.com
    https://dotnet.microsoft.com/en-us/learn/csharp

    Learn C# | Free tutorials, courses, videos, and more | .NET

  4. codecademy.com
    https://www.codecademy.com/learn/learn-c-sharp

    Learn C# | Codecademy

  5. microsoft.com
    https://learn.microsoft.com/en-us/visualstudio/get-started/csharp

    C# development with Visual Studio - Visual Studio (Windows)

  6. tutorialspoint.com
    https://www.tutorialspoint.com/csharp

    C# Tutorial

  7. microsoft.com
    https://dotnet.microsoft.com/en-us/learn/dotnet/hello-world-tutorial

    .NET Tutorial | Hello World in 5 minutes

  8. dotnettutorials.net
    https://dotnettutorials.net/lesson/introduction-to-csharp-language

    Introduction to C# Programming Language - Dot Net Tutorials

  9. coursera.org
    https://www.coursera.org/learn/c-sharp-for-dot-net

    C# for .NET Developers Course by Board Infinity | Coursera

  10. epam.com
    https://anywhere.epam.com/en/blog/c-sharp-dot-net-introduction

    C# Tutorial & Basics | An Introduction to C# Programming …