96 Pontiac Sunfire dead battery

Aquire an Ammeter and while the car is off, clamp around the main power wire going to the battery and see what the amperage reading is.

Typically you shouldn't really see anything high at all but just see what the reading is and post back.

I would also advise that is you do get a reading considerable enough to think that something(s) are drawing too much, start pulling fuses one at a time and remeter the power wire to see which fuse is accepting a considerable amount of power through it.

If you can't find any fuse that is accepting the majority of the power, there may be something aftermarket that is installed that is not wired through the fuse box in which case you would want to remove the fuse off of it's power line or onboard fuse if one exists and remeter the main power line.