Lol, congrats man! Great story
All you have to do is take it out of the box, at the bottom it has a cord with a funky lookin giant plug. Just look under your steering column up above the pedals (it's pretty much right under the steering wheel) and find spot where you plug that sucker in.
That's about it. Make sure you turn off your radio and anything else that would drain un-needed power as it might effect the tune. Then just turn the power of your car on when the predator starts to come on (don't start the engine EVER untill the end when it tells you it's done and you restart it). Simply follow the instructions. It should tell you to turn it off then back on 1-2 times during the upload process. For now just put in the Perf.91 preset tune (if you have a CAI, do the Perf.91 CAI) and that's about it really.
It comes with a mini instruction book to help you out too just in case, and it's pretty good.
Good luck! If you have any questions, just ask!
Myself and MANY others will be happy to help you out. There is a chance you may have to update the firmware first but that's no biggie, just gotta get the USB adapter so you can plug it in to your computer and update it.