I'll help you with the C# language.

I am a Sharpe developer and can help beginners or those already knowledgeable, depending on their knowledge. Main platform asp.net.
And there is knowledge about products
Backend: C#, ASP.NET Core,
Entity Framework, Dapper, Fluent
API, LINQ, AutoMapper,
Dependency Injection (DI),
NLog, serialog, Hangfire.
There is also other knowledge in the field of other programming languages and parts of the frontend.