In the aftermath of the Gap—a sudden loss of history that affected the entire galaxy and resulted in the disappearance of the world of Golarion—the Starfinder Society formed and became one of the preeminent organizations of the Pact Worlds. Using the Drift, the machine god Triune’s gift of rapid interstellar travel, Starfinder agents explored worlds far and near under the guidance of their elected leader, the First Seeker. The treasures they found and knowledge they recorded secured the Starfinder Society’s prestige and wealth for generations. 

If you don’t have time to create a new character, want to try out a new character class, or are just starting out, you can use a pregenerated character ("pregen") based on the Starfinder iconic characters. Click the link above to download the Iconic Character sheets from Paizo 

The character building guide can be found on Lorespire. As Paizo continues to update the guide for the new edition, the link above will update automatically. 

You will have to register yourself and their characters online. Upon doing so on the My Pathfinder Society page, you'll receive an official Pathfinder Society Number. Keep your Pathfinder Society Number handy and bring it with you to every Pathfinder Society event you attend (this is the same number for Starfinder Society).