It is important to take care of your car: which involves regular visits to the shop for maintenance checks. There are some things you can personally keep an eye on though. You do not have to recall everything from memory, keep an owner’s manual on-hand. Watch for warning lights and regularly check the tire pressure.
If nothing else, you can do a simple walk-around once a week to ensure that there is no exterior body damage and test the locks and windows for smooth operation.