Learn C# (Microsoft's modern programming language for backend, desktop, mobile, and game development) from the basics to production-grade: prerequisite skills & environment setup, history, background & why you need C#, core concepts & main architecture, basic syntax & program structure, classes, objects & OOP, advanced types & collections, exception handling & debugging, input/output & file handling, configuration & environment management, data access & persistence with Entity Framework Core, testing & quality assurance, web API & HTTP client, security & identity, secure coding & best practices, asynchronous programming & concurrency, performance tuning & diagnostics, architecture & design patterns, cloud-native & microservices, modern tooling & build automation, deployment & cloud integration, observability & monitoring, desktop & cross-platform apps, and future trends & stable modern features in 23 episodes.
Before writing C# code, you need to master basic programming concepts, OOP, the CLI, and Git. In this episode you will also set up the .NET SDK, choose an IDE, and verify your first installation with a simple console project.

This episode traces the evolution of C# from version 1.0 in the .NET Framework to .NET 8, the shift to a cross-platform release model, and the problems it solves through the managed runtime, type safety, and interoperability, plus its comparison with other languages.

This episode breaks down how C# works behind the scenes: compilation to Intermediate Language, execution by the CLR with JIT and the garbage collector, the concept of assemblies, metadata, and manifest, and the .NET solution and project structure along with its build flow.

This episode teaches the foundations of C# syntax: program structure with top-level statements, variable and constant declarations, basic data types, operators and control flow, and how to run a complete first console program.

This episode covers object-oriented programming in C#: class, object, and constructors, encapsulation with access modifiers and properties, inheritance with polymorphism, abstract classes and interfaces, and record types for immutable data.

This episode expands your knowledge of C# types: struct, enum, tuple, and nullable value types, collections like Array, List, Dictionary, and HashSet, LINQ basics for querying collections, and nullable reference types for modern null safety.

This episode covers handling failures well: the try-catch-finally pattern, throw and custom exceptions, resource management with the using declaration, debugging techniques in Visual Studio and VS Code, and basic logging for production applications.

This episode covers file management in C#: System.IO with File, Directory, and Path, using streams such as StreamReader, StreamWriter, and FileStream, JSON and XML serialization with System.Text.Json, and the asynchronous I/O pattern with async/await.

This episode covers .NET application settings: appsettings.json and environment variables, the options pattern with binding to POCOs, secrets management and multi-environment configuration, and the role of IHostEnvironment in the .NET Generic Host.

This episode covers data access with Entity Framework Core: DbContext and models, CRUD operations, migrations and relationships between entities, querying with LINQ and raw SQL, and database providers such as SQL Server, PostgreSQL, and SQLite.
