diff --git a/README.md b/README.md
index c2b48d5..d76280a 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ This program will download all unlisted videos and descriptions in a given YouTu
 
 1. Clone the repository.
 2. Install youtube-dl Python library
+3. Get a YouTube API key following the instructions here [YouTube Data API Overview](https://developers.google.com/youtube/registering_an_application)
+4. Save the API key to a file called `youtube.key`
 ```sh
 pip install youtube_dl
 ```