Merge branch 'main' into fix1

.github/workflows/github-actions-demo.yml

@@ -0,0 +1,18 @@
+name: GitHub Actions Demo
+run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
+on: [push]
+jobs:
+  Explore-GitHub-Actions:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
+      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
+      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+      - name: List files in the repository
+        run: |
+          ls ${{ github.workspace }}
+      - run: echo "🍏 This job's status is ${{ job.status }}."

README.md

@@ -4,6 +4,22 @@
 a tutorial for demonstrating git usage and lecturing.
 
 
+first exercise (stage 1):
+    1. fork origin repository to my account
+    2. git clone myself repository to local
+    3. fix something on local file
+    4. sumbit changes
+    5. push the changes to my github repository
+    6. pull request
+
+# audience
+
+* university students
+* fresh graduated 
+
 LET ME COMMIT.hahaha
 
+
 discard original codes to comply with the newest version
+
+