I am preparing to play my first game of Pathfinder and indeed my first tabletop RPG in about a decade. I've decided to play a human who is either a Cleric or Paladin, depending on my party's needs. I want to have a solid idea of my character's background before I go roll that character this weekend. I don't own any of the materials yet since I am not sure this is something I will want to continue doing. I've been relying on the information available on the internet.
I am trying to identify the correct deity for my character so I can start familiarizing myself with it. I am looking for a Good (or possibly neutral) aligned deity that would be the type whose followers defend the weak and downtrodden and fight against injustice; the kind of deity whose followers would take in foundlings and orphans, help the poor, and perhaps even stand up to despots.
I'd also be interested in learning more about the setting in general using whatever free resources are available to me. This is a Pathfinder Society game, so I'm primarily interested in learning about the cultures and regions the current Pathfinder Society campaign takes place in.