if you just purchased the car, it is always good to check the brakes, all fluids, belts, hoses, etc... (usually you should try and check before you purchase the car but since you all ready have, forget it)

I would suggest changing all fluids and maybe giving it a tune-up, this way you become familiar with YOUR car and know when everything has been done and keep track of when things need to be done. Not having any problems with it "YET" is the key. Just because you aren't having problems with it now doesn't mean they won't pop up sometime in the near future.

my suggestion, change all fluids, oil, coolant, powersteering, transmission, etc...