Recommendations- physical security is very important to me. There are burglaries and home invasions- two different scenarios with some common protections.
#1 SOLID ENTRANCE DOORS -Yes, they can break a window and climb over the glass- nobody really wants to and it is noisy and takes a lot more time. I recommend the commercial steel doors and frames, the ugly gray ones. Paint them or veneer them with wood, put on the best commercial grade deadbolt you can find. Door/frame combo about $500 new, I suspect they can be found a lot cheaper from an architectural salvage place. Deadbolt about $80. The frame is designed to slip over the wall studs, make sure the wall adjacent to the door is solid.
#2- SOLID BEDROOM DOOR, just like the entry doors. (A solid core wood door with deadbolt will probably be ok here. Reinforce the jamb and strike.)
#3- anti break film for the glass on the lower story or accessible windows or glass doors (glass sliding doors suck, they seem to be one of the most common access points for thieves.)
#4- Check the garage door, can the top be pushed in so the emergency release is accessible with a wire hook? If so, Fix it.
#5- Motion lights- they will come on at odd times, no way do you want an exterior motion light tied to an alarm. But they are useful , both to save your ankles bringing out the trash at night and to bother the riff-raff.
#6 Surveillance- cameras can tell you what is going on outside, and also on the other side of the bedroom door.
#7- alarm- Loud-Ideally it should drive out an intruder by noise.
