diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,3 +1,25 @@
 # Night Theme Switcher
 
-Change theme to dark variant when Night Light activates
+Automatically change the GTK theme to dark variant when Night Light activates.
+
+![](./screenshot.gif)
+
+## Installation
+
+Clone the repository and enter the directory:
+
+```bash
+git clone https://git.romainvigier.fr/Romain/nightthemeswitcher-gnome-shell-extension.git && cd nightthemeswitcher-gnome-shell-extension
+```
+
+Install using `make`:
+
+```bash
+make install
+```
+
+Restart your GNOME session and enable the extension:
+
+```bash
+gnome-shell-extension-tool -e nightthemeswitcher@romainvigier.fr
+```
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