What is going on with my sleep?
The fuse(s) should be as close as possible to where the alarm is wired into the car's electrical system. This is to prevent electrical shorts or fires in the alarm cabling. Each installation will be slightly different, it's just a matter of following the wires from the alarm unit, which may be mounted behind the dash or under the hood, to where they join the heavier-gauge wires that are part of the car's original wiring. The alarm fuses are usually mounted in holders attached to the wiring, as opposed to the car's original fuses which are usually mounted on a panel fixed to the car. Hope this makes sense.
Tell the other people in your house to give you priority on the Internet, otherwise you will simply cut off all access to the Internet. (The details of how to cut off specific individuals is immaterial, the important thing is the threat.) If you are the person paying for it, that's your right.