diff --git a/README.md b/README.md
index fae53f1..c94de5b 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,11 @@
 # youtube-thumbnail-tester-chrome-extension
+
+## Installation
+- Clone the repo
+- Go to chrome://extensions
+- Enable the developer options if not already enabled
+- Click "Load unpacked extension..." (FR: "Charger l'extension non empaquetée")
+- Navigate and select the repo's root directory
+
+
+Then you should see the extension was installed
\ No newline at end of file