C#
Learn C# from zero to genuinely useful: a practice-first path where every concept is drilled in real code, every challenge is executed and graded in a locked-down sandbox against the real .NET SDK, and debugging is taught as a skill — not an afterthought.
C# — Beginner
Build real C# from your first program to working applications: variables, control flow, methods, collections, classes, LINQ, files, exceptions, and an introduction to async — every step practiced and graded in a sandbox running the real .NET SDK.
C# — Intermediate
Move from C# fundamentals to building real applications: delegates, events, generics, LINQ, async, concurrency, dependency injection, HTTP, JSON, data access, testing, architecture, performance, and security — every concept practiced and graded in a sandbox running the real .NET SDK, ending in a milestone-built Task Management Engine capstone.
C# — Advanced
Understand why .NET behaves the way it does: memory and the GC, advanced type system and generics, delegates and expression trees, reflection and Roslyn metaprogramming, async and concurrency internals, channels and backpressure, performance engineering that measures first, diagnostics, native interop, security, and a production capstone — every challenge executed in the real .NET 10 sandbox.