There will be a form with an outline of an automobile. Inspect the exterior of the car and make sure that all dents, paint scrapes are marked on that form. Pictures are not necessary but if you have a digital camera, why not.
If the car’ wheels use a locking nut that requires a special tool, make sure you know where it is in the car. If you need to change a flat, you won’t be able to without the adapter (tool).
Also check the radio, to make sure it is working properly. if the car does not have an antenna, make sure it is marked on that sheet and/or insist on one. Without it, radio reception will be almost non existant, depending on the radio. Remove the antenna from the car when leaving the car unattended.
When checking the spare, make sure it is properly inflated. When checking the tires on the car, look for one that may be low (slow leak). Ask them to replace it. They will usually swap with the spare. Ask them, then to replace the spare.