01. GitHub Setup and Repositories

Level: Beginner

ℹ️ What You'll Learn

• Create GitHub account and profile
• Create your first repository
• Set up secure SSH authentication
• Clone repositories to your machine
• Push and pull code with GitHub
• Collaborate with team members

The Problem

Git runs locally on your machine. GitHub is where your code lives in the cloud, shared with your team. Every professional .NET project is on GitHub (or GitLab/Bitbucket). You need to know how to set it up, push code, and handle pull requests.

Create GitHub Account

Visit: https://github.com

Sign up with your email and create username

Create Repository

1. Click + → New repository
2. Name: SMS (SchoolManagementSystem)
3. Description: "School Management System project"
4. Public (open source) or Private (team only)
5. Add .gitignore: Select C#
6. Add license: MIT
7. Click Create

SSH Keys Setup

Generate SSH key (secure authentication):

ssh-keygen -t ed25519 -C "email@example.com"
# Saves to ~/.ssh/id_ed25519

Copy public key:

cat ~/.ssh/id_ed25519.pub
# Copy entire output

GitHub Settings → SSH keys → Add SSH key → Paste

Verify:

ssh -T git@github.com
# Hi TeamSahasra! You've successfully authenticated.

Clone Repository

# With HTTPS (password prompt each time)
git clone https://github.com/TeamSahasra/SMS.git

# With SSH (no password)
git clone git@github.com:TeamSahasra/SMS.git

cd SMS

Repository Structure

SMS on GitHub:

GitHub: TeamSahasra/SMS
├── README.md
├── .gitignore
├── LICENSE
├── src/
│   ├── SMS.Core/
│   ├── SMS.Data/
│   └── SMS.Api/
├── tests/
│   └── SMS.Tests/
└── docs/

README.md

Project documentation:

# School Management System (SMS)

Simple SMS for school operations.

## Features
- Student management
- Exam tracking
- Fee management
- Attendance

## Setup
1. Clone: `git clone ...`
2. Build: `dotnet build`
3. Run: `dotnet run`

## Tech Stack
- ASP.NET Core Web API
- SQL Server
- Entity Framework Core

## Team
- TeamSahasra

Good README = attracts contributors.

Key Takeaways

• GitHub = cloud repository
• SSH = secure authentication
• README = project documentation
• .gitignore = exclude files

💡 GitHub Tip

Write comprehensive README. First impression for contributors.

🤖Use AI to Learn Faster

Use ChatGPT, Claude, or Copilot to go deeper on GitHub Setup. Try these prompts:

• "How do I create a GitHub repository?"
• "Why use SSH keys?"
• "What should be in README?"
• "Quiz me on GitHub"

💡 Tip: After reading this article, paste your own code into AI and ask "What could go wrong here and why?" — fastest way to find edge cases and deepen understanding.