bought alero with 120,000miles now what?

I recently bought a 1999 alero with about 118,000 miles and i was wondering if there is anything i should be looking to get done on the car as i do not know the service history of the car...I have never owned an olds before and this is my winter car so i need it to be in the best of shape so any recommended service would be great. I was also curious where i could find the recommended serivce at each interval so that i know what to do...lol thanks a million