Hi Bodanel, you should get your open water manual as you have to work the first three chapters of this on your way to scuba diver. Tables usually come with the manual (in my part of the world anyway), but they are required for the full OW cert. You will get a Scuba Diver certification card, so to upgrade, go back, do chapters 4 and 5, remaining pool sessions, final exam and OW dives 3 and 4. The classroom and pool work you can do at a local dive centre to you, then take your paperwork on vacation to do the OW dives, this is called a referral.