How to Learn C#: A Complete Beginner's Guide

C# is Microsoft's modern programming language. It's used for Windows apps, games with Unity, web APIs with ASP.NET, and enterprise software. Here's how to learn C#.

Why Learn C#?

• Game development — Unity uses C#
• Enterprise jobs — Banks and corporations love C#
• Cross-platform — .NET runs on Windows, Mac, Linux
• Modern syntax — Clean and readable

First C# Program

using System;

class Program {
  static void Main() {
    Console.WriteLine("Hello, World!");
  }
}

C# Fundamentals

// Variables
string name = "John";
int age = 25;
decimal price = 19.99m;

// Arrays
int[] numbers = { 1, 2, 3, 4, 5 };

// Methods
static int Add(int a, int b) {
  return a + b;
}

// Classes
public class Person {
  public string Name { get; set; }
  public int Age { get; set; }

  public string Greet() {
    return $"Hi, I'm {Name}";
  }
}

Learning Path

1. Week 1-2: Variables, types, operators
2. Week 3-4: Methods, conditionals, loops
3. Month 2: OOP (classes, inheritance, interfaces)
4. Month 3: LINQ, async/await, collections
5. Month 4: Build projects (console app, web API)