diff --git a/README.md b/README.md
index 20f66a1..0563619 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,19 @@
 # Mastodon Image Bot
 
-This is a small program that posts an image from a given folder every time you call it. You can call it like so:
+This is a small program that posts an image from a given folder every time you call it.
+
+## Setup
+
+- [Install deno](https://deno.land/manual@v1.30.1/getting_started/installation)
+- Create a folder somewhere on your computer
+- Fill the folder with images you'd like to post
+
+## Usage
+
+You can call it like so:
 
 ```
 MASTODON_INSTANCE_URL=... MASTODON_ACCESS_TOKEN=... deno run --allow-env --allow-net --allow-write --allow-read main.ts [folder]
 ```
 
-If you leave out `folder` when calling the script, it will try to look for a `posts` directory inside the folder where the script is located.
+It is best if you specify `folder` as an `/absolute/path/like/so`. If you leave out `folder` when calling the script, it will try to look for a `posts` directory inside the folder where the script is located.