feat: use switch instead of checkout

module-03-branching/README.md

@@ -4,8 +4,8 @@
 
 In this module, you will:
 - Understand what a branch is in Git
-- Create new branches using `git branch` or `git checkout -b`
-- Switch between branches using `git checkout` or `git switch`
+- Create new branches using `git branch` or `git switch -c`
+- Switch between branches using `git switch`
 - View all branches with `git branch`
 - Understand that branches allow parallel development
 
@@ -38,19 +38,18 @@ Your goal is to create a feature branch, make commits on it, and understand how
 
 1. Navigate to the challenge directory: `cd challenge`
 2. View existing branches: `git branch`
-3. Create and switch to new branch: `git checkout -b feature-login`
+3. Create and switch to new branch: `git switch -c feature-login`
 4. Create `login.py` with any content you like
 5. Stage and commit: `git add login.py` and `git commit -m "Add login functionality"`
 6. Modify `login.py`, then commit again
-7. Switch back to main: `git checkout main`
+7. Switch back to main: `git switch main`
 8. Run `ls` and notice that `login.py` doesn't exist on main!
-9. Switch back to feature-login: `git checkout feature-login`
+9. Switch back to feature-login: `git switch feature-login`
 10. Run `ls` again and see that `login.py` is back!
 
 > **Important Notes:**
-> - You can use either `git checkout` or `git switch` to change branches
-> - `git checkout -b <name>` creates and switches in one command
-> - `git switch -c <name>` is the newer equivalent
+> - Use `git switch` to change branches (modern Git command)
+> - `git switch -c <name>` creates and switches in one command
 > - Branches are independent - files in one branch don't affect another until you merge
 > - You can switch between branches as many times as you want
 
@@ -66,10 +65,9 @@ Your goal is to create a feature branch, make commits on it, and understand how
 ```bash
 git branch                   # List all branches (* shows current)
 git branch <name>            # Create a new branch
-git checkout <branch>        # Switch to an existing branch
-git checkout -b <name>       # Create and switch to new branch
-git switch <branch>          # Switch to a branch (newer syntax)
-git switch -c <name>         # Create and switch (newer syntax)
+git switch <branch>          # Switch to an existing branch
+git switch -c <name>         # Create and switch to new branch
+git switch -                 # Switch back to previous branch
 git branch -d <name>         # Delete a branch (we won't use this yet)
 ```