Best Free C# Courses in 2026 (Ranked Honestly)

Three reasons C# is worth your time. First, game development: Unity uses C# as its scripting language, and Unity is the most-used engine in indie and mobile game dev, so knowing C# is the entry point to building games for any platform. Second, web and API development: ASP.NET Core is a fast, mature framework that enterprises and startups both use for web APIs and full-stack apps, and C# with .NET is a first-class career path. Third, cross-platform mobile: .NET MAUI lets you build iOS and Android apps from a single C# codebase. Microsoft has put serious work into making C# and .NET cross-platform and open source since 2016, so the old "C# is Windows-only" worry is outdated. C# also has a strict type system and object-oriented design that build strong programming foundations. Learners who master it find picking up Java, Go, or TypeScript straightforward.

Three honest filters. Does it actually teach the language, not just IDE click-throughs? Does it work without paying anything? And does it lead somewhere useful: a real project, a certificate, or a clear path to Unity or .NET? There are a lot of thin video tutorials on YouTube that cover syntax but skip the harder parts like generics, async/await, and LINQ. The three courses below pass all three filters.

This is the most thorough free C# video available. It runs 4+ hours and covers variables, types, control flow, methods, classes, inheritance, interfaces, error handling, collections, LINQ, and async programming. It's a single long-form video taught by a consistent instructor, so it moves at a steady pace. There's no in-browser editor: you install Visual Studio or VS Code and write code locally. That setup step is worth doing because it's how real C# development works. No certificate, but the coverage is solid for someone going straight to Unity or a junior .NET role after finishing. See the course at /courses/freecodecamp-csharp and the platform at /platforms/freecodecamp.

Microsoft's official learn path for C# beginners. It's split into short modules (10 to 30 minutes each) that run entirely in the browser: no install, no setup, no friction. You write code in a live environment and see output right away. Microsoft publishes this course because they want developers on the .NET ecosystem, so the quality is high and the content stays current. When you complete the path you earn a free Microsoft credential you can add to your resume. The material covers variables, data types, control flow, methods, and basic object-oriented concepts, a solid foundation before moving to the freeCodeCamp video for more depth. See the course at /courses/microsoft-learn-csharp and the platform at /platforms/microsoft-learn.

Once you're comfortable with the language, this intermediate path teaches you to build real applications. You'll work with ASP.NET Core, create web APIs, connect to databases, handle authentication, and deploy an app. It's the bridge between "I understand C# syntax" and "I can build things people use." The modules are browser-based with hands-on labs, and Microsoft updates the content to match current .NET versions. This is the course to take before starting your first Unity project (it builds the OOP and project-structure thinking you need) or before applying to junior .NET developer roles. See the course at /courses/microsoft-learn-dotnet.

Pick freeCodeCamp if you want one long-form video that covers the language end-to-end, or if you already know you want to get into Unity: the video pace lets you pause and practice. Pick Microsoft Learn's beginner path if you're completely new and want short, interactive modules with no setup. Then stack the .NET course on top. If you're coming from another language like Java or TypeScript and just need a C# syntax bridge, the Microsoft Learn beginner path alone is probably enough: it's short and focused. For a full list of free C# courses in our catalog, see /languages/csharp. Want a step-by-step order to work through these three courses, from basics to .NET? Follow our C# learning path. C# is a common backend choice too, so our free backend course guide is worth a look. New to coding entirely? Start with how to learn to code for free.