Question on "Restoring" MBP

[T4t3r]

I picked up a 2015 rMBP during the Best Buy sale earlier this week. The screen has some yellow tint on the left half and some poor backlighting along the lower right part. I want to do an exchange in hopes of getting one with a better screen.

What is the right course of action to erase my data and set to back to "factory defaults" before exchanging it? I set it up from a fresh install, so the only things on it are my google accounts, iTunes account is linked, some pictures, and browser history.

 

[JTToft]

Boot into recovery mode (CMD + R on boot), erase the volume using Disk Utility (or secure erase if you want to make sure your data can't be recovered), and then install OS X again.

Beforehand, perhaps also deauthorize iTunes Store and sign out of all your cloud accounts to make sure the computer is forgotten with Google, iCloud, etc.