P0.4: Git & GitHub Mastery

Every professional developer tracks their code updates using Git and hosts it online using GitHub.

1. What is Version Control?

Git is a tool that runs locally on your computer to keep historical snapshots of your project. If you break your app, you can restore it to an older working state instantly. GitHub is a cloud platform where you host those snapshots so you can collaborate with teams.

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Real-World Developer Case Study

8 Years Exp

RoleVP of Developer Experience

Salary₹65 Lakhs/yr equivalent

CompanyVercel (Next.js)

Core Tech Stack

ReactNext.jsGitGitHub ActionsVercel Deploy

“Every major web platform integrates with Git. Your commits are a record of your problem-solving. Make clean commits and push regularly!”

2. Essential Git Command Workflow

When coding, you will use this cycle repeatedly:

1. Initialize a repository: git init (Creates a local git store)
2. Check modified files: git status (Shows changed files)
3. Stage changes: git add . (Stages all modified files for snapshot)
4. Take a snapshot: git commit -m "feat: add landing header" (Creates a savepoint with description)
5. Upload to cloud: git push origin main (Pushes local code to GitHub)