Go through the owners manual maintenance schedule and assume nothing else has been done. It's possible the seller did all the work, but why not oil changes too?
Replace all other fluids: engine coolant, transmission fluid (easy enough to replace filter too), and brake fluid.
Replace spark plugs, serpentine belt, engine and cabin air filters, clean the MAF sensor.
Inspect the brakes, replace as needed.
The car may need new struts/shocks.