What paperbooks would you guys recommend? Is there any book out there that has some kind of encyclopedia of C# pre created classes,.. ? Thanks
C# classes to do what? There are as you know a ton of C# resources on the net. And I wouldn't actually stop there you might be surprised how much information you can glean from examples written in other languages, particularly JavaScript. Translating them is a good exercise.
Everything you need to know about C# to create scripts in Unity. Beginner Scripting: https://learn.unity.com/project/beginner-gameplay-scripting Intermediate Scripting: https://learn.unity.com/project/intermediate-gameplay-scripting The rest of what you need to know is collected in hints, e.g. Visual Studio Community or you work with the manual. https://docs.unity3d.com/ScriptReference/index.html If you really want to dig deep into the C# language from scratch, it's best to reach out to Microsoft. https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/ A book for a computer scientist is like working on a clay tablet from Mesopotamia.