Read this first:
docs.google.com/document/d/1ot7FHfQn3JkIzgqsOyxRMkSaEczZLf5bxrhTRcJLBpo/edit

​Spreadsheet with all the info for calls:
​docs.google.com/spreadsheets/d/137wP147v-t1RUGwHMagtIMUjvhW7wkHcUNeKqKWhh7E/edit