Grcles, The Confirmation reward has some conditions and there are a couple of options, so read it carefully. Don't forget to get your Welcome to Pathfinder Boon if you are a new player.
PFS has a lot of rules but most of them are to keep the game simple and near the core rule set. There are a lot of powerful options that you just can't do in PFS (also called Organized Play). PFS runs on paperwork - so get a folder and put all your stuff for the character in it.
First level characters are freely rebuildable, so if you you haven't hit second level yet you might want to look over Unchanined Rogue from Pathfinder Unchained as I think I read that you are playing a Rogue. All of the Core Rule Book classes are open and you can take any of them.
Don't forget to read the "Items that can save you in 2018" thread.