For the power atenna wire just don't use that wire at all. You can cap it off, cut off any exposed wire from the end, or just leave it folded in that little sticker if it's still stuck to the wire.
As for the second yellow wire, I just tapped that into the same constant power that my other yellow wire is in. I'm not sure if there's any reason you'd need to run that directly to the battery because they probably would have given you a longer wire for that. But maybe someone else will chime in on that one.
You're also going to have two black ground wires and you can definitely tap those two into the same wire. And if you want to operate the DVD feature of the head unit without using the parking brake then just tie the green parking brake wire coming off of the head unit in with your two black grounds. Hope that helps!