Once you have completed your PADI Open Water Course the next step is to select the PADI Advanced Open Water Program. The good news is that there are no formal classroom sessions with this PADI course. The only academic work required is to read the relevant chapters in the PADI Adventures in Diving Manual and complete the knowledge reviews at the end of each chapter. You will need a minimum of two days and one night to complete your PADI Advanced Open Water Course but you can also stretch the fun out on a multi-night liveaboard trip.