Sources/tips for learning C#?

Hello, I'm a novice coder interested in game design. I'm mostly fluent in Javascript and know a bit of Luau, and I have a general understanding of the important concepts of coding. I'm interested in making games in S&box, considering how good Source 2 is and how simple people say its API is. Obviously, to do that, I need to know C#, which I hear is at least somewhat beginner friendly. Anyone know any good tutorials or sites for learning it? Anything I should know before diving in S&box game development, C# game development, or game development in general?

you can try getting started with a platform called SoloLearn.
 https://www.sololearn.com/en/learn/courses/c-sharp-introduction
best of luck 

Thank you!i very much appreciate it.