Joining the XB1 family!

Hey everyone! As the title says, just got myself an XB1. Very excited to give this a try! Went cheap for now and just got a preowned 500GB just to save extra money, and got halo 5. aside from all that, what's some things I should know whether it's game/system wise? Appreciate the feedback/help and look forward to hopefully knowing some of ya in this community