I am trying to teach myself to use the Central API and i am having trouble getting off the ground. I can't even figure out how to obtain an auth code form the API using my client_id. I obviously missing something, and admitedly don't have any experience in this. Every time i try to use the API it comes back saing "The access token is missing", but i'm trying to obtain an access token. I can't possible need an access token to get an access token. Does anyone have some resources to help het me on my feet with the API?