diff --git a/README.md b/README.md
index 483845a..a0a493a 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ## 🤓 Course overview and learning outcomes 
 
-The goal of this course is to give you a brief introduction to GitHub. We’ll also provide you with materials for further learning and a few ideas to get you started on our platform. 🚀
+The goal of this course is to give you a brief introduction to GitHub. We’ll also provide you with materials for further learning and a few ideas to get you started on our platform. 🚀 
 
 ## :octocat: Git and GitHub
 
@@ -105,3 +105,4 @@ You can check out the GitHub Explore website [at github.com/explore](https://git
 * [GitHub's Learning Lab](https://lab.github.com/)
 * [Education community forum](https://education.github.community/)
 * [GitHub community forum](https://github.community/)
+guandan
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