Just took delivery of a used 2015 GT-R. What should I do first to break it in?

Picked up my new-to-me 2015 GT-R and I'm excited to get it on the track and backroads. What's a good first step for breaking in the engine and getting the car dialed in? Should I focus on tuning, oil changes, or something else entirely? Any advice from fellow GT-R owners would be appreciated!