#1 Create your app on Spotify and get your Client Id and Client Secret Go to: https://developer.spotify.com/dashboard/applications
Client Credential Flow - Use this to hit endpoints that do not access user information - you shouldn't have to worry about this too much if you use the node SDK linked below https://developer.spotify.com/documentation/general/guides/authorization/client-credentials/
List of Spotify Endpoints - not all endpoints are available if you use the Client Credential Flow. https://developer.spotify.com/documentation/web-api/reference/#/
Handy Node SDK to make working with the API easier