The 9th gen corolla needs very little maintenance. The spark plugs are good till about 110,000 miles. The auto trans fluid is fill for life according to the owners manual under normal operating conditions. I recommend a simple drian and refill every 30,000 miles. I would check the engine and cabin air filters and replace them if they appear very dirty. The factory fill coolant has a 10year or 100k mile life. Check the belt for any cracks.
Here is a list of what I have done to my car. These cars are real easy and cheap to maintain.
Oil & filter change every 3-4k
Auto Trans drain & refill - every 30k
tire rotation - once a year (should do it more often, too lazy)
Air Filter at 40k
Cabin filter - too cheap to replace, I just shook mine out at 50k and put it back in
Serpentine belt replaced - 50k