helpful youtube videos

I recently needed to get up to speed with rest api and google app scripts. After multiple google searches, I am happy to report these videos helped me out tremendously :

1. What Oauth is about ( https://www.youtube.com/watch?v=996OiexHze0&t=1997s )

2. How to pass access tokens within a google app script ( https://www.youtube.com/watch?v=aP6pxK3jexc )