diff --git a/src/day_3/notes.md b/src/day_3/notes.md
index 2a0586a..900f046 100644
--- a/src/day_3/notes.md
+++ b/src/day_3/notes.md
@@ -38,6 +38,22 @@ if you want to stage all changes.
 
 ## git checkout
 
+This command enables you to switch to another branch or to a previous commit.
+
+Examples are:
+
+```bash
+git checkout "branchname"
+```
+
+or
+
+```bash
+git checkout -b "branchname"
+```
+
+If you want to create a new branch and switch to it.
+
 ## git push
 
 ## git pull