Differential failure

Rear driver side differential bearing/seal failed. Basically, the CV axle separated from the rear end. As I continued driving, slowly, to a safe place to pull over, the brake lines wrapped around the axle. Some being broken loose completely. Including the park brake line.
The line with brake fluid still present, was capped off.
There is no brake for any of the other tires.
The car will not go into park as a result of this.
The rear differential is stock, (non-limited slip) so the tires do spin individually.
Where would I begin starting this repair?