Update README.md

Author: ewimpey

README.md

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 Join our NCAA bracket challenge and sharpen your Git skills at the same time! Whether you're a Git newbie or a seasoned veteran, follow these steps to submit your bracket predictions.
 
+Follow the instructions below to participate, or check out video instructions here: https://www.youtube.com/playlist?list=PLAGij-fctciAzGklzjKztZd7MEZLlp6_v
+
 ## Step 1: Join the fun!
 Join by opening a new issue. Click **Issues** and then **new issue**.