diff --git a/README.md b/README.md
index 18099df..870c532 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,13 @@
 # one-file-php-presentation
 
+## Installation
+
 This is a single PHP file; drop it in a folder full of images and you have a presentation.
 
-Demo: [https://joshua.seigler.net/presentations/vps-the-hard-way/](https://joshua.seigler.net/presentations/vps-the-hard-way/)
+## Demo
+
+[https://joshua.seigler.net/presentations/vps-the-hard-way/](https://joshua.seigler.net/presentations/vps-the-hard-way/)
+
+## How to use
+
+You can advance the slides by clicking, or with `[right]` or `[down]`. You can go back a slide with `[left]` or `[up]`, and you can go to the first slide with `[home]` or the last slide with `[end]`.