Section 01

Git & GitHub Notes

Step-by-step commands from class. Copy and paste — keep the order.

Full command flow

git --version
git config --global user.name "Your Name"
git config --global user.email "you@email.com"
mkdir MyFirstRepo && cd MyFirstRepo
# create index.html
git init
git add .
git commit -m "first commit: add index.html"
git remote add origin https://github.com/USER/MyFirstRepo.git
git branch -M main
git push -u origin main

1) Verify Git

After install, open a new terminal.

git --version

2) Configure name + email

Use the same email as your GitHub account.

git config --global user.name "Your Name"
git config --global user.email "you@email.com"
git config --global --list

3) Create folder + file

cd Desktop
mkdir MyFirstRepo
cd MyFirstRepo
# Create index.html with any editor

<!DOCTYPE html>
<html>
<head><title>My First Repo</title></head>
<body>
  <h1>Hello GitHub!</h1>
  <p>Pushed by YOUR_NAME</p>
</body>
</html>

4) init → add → commit

Working → Staging → Repository

git init
git status
git add .
git status
git commit -m "first commit: add index.html"
git log --oneline

5) Create empty GitHub repo + push

github.com → New repository → name: MyFirstRepo
Public
Do NOT add README / .gitignore (keep empty)
Copy HTTPS URL

git remote add origin https://github.com/YOUR_USERNAME/MyFirstRepo.git
git remote -v
git branch -M main
git push -u origin main

Daily workflow (after first push)

# edit files
git add .
git commit -m "update homepage"
git push

# optional
git pull
git clone https://github.com/USER/REPO.git

Common errors

git not recognized

Install Git + open a new terminal

auth failed

remote origin already exists

git remote remove origin then add again

non-fast-forward

Repo was not empty (README issue)

Please tell me who you are

Set user.name and user.email

Download Git slides →