EDIT: The only reason why I still had it at this point was because I could use it with other apps. However, now that my Spotify Subscription is cancelled, it doesn't work with anything. It's mildly infuriating because today, I can't still use it with other apps like I was able to yesterday.
Please don't make the same mistake I made. No one should buy this.
I did it all by myself with no experience - wired up the wiring harness properly, installed the bezel, connected some sort of adapter so the car alert tones and steering wheel controls still work, etc. I bought the radio from Crutchfield who have lifetime phone support to assist with any issues (I didn’t need it though). I just followed the instructions they provided.
Good for you.