Except for Payde, do not talk to him yet. Regardless, you should start talking to the Magisters on the boat. I will not be including the personal quests of the Origin Characters in these sections but will make note of specific places where if you have an Origin Character on your team, you might need to be aware of certain things. You'll be collared which prevents Source Magic before your character even wakes up. This is where you will start after Character Creation (Maybe not for undead or Fane, Unsure yet). You can read the original guide on the divinitiy original sin 2 steam community hub.