Washing Once a week Hand washing is best, but if you must use a car wash, find one that is brushless and relies on high pressure water or attendants that soap the car by hand.
Waxing Every 6 months with a good quality non-abrasive wax. Once a year put some wax on the door jams and the underside of the trunk. If you're ambitious, you could spend some time detailing the under-hood area, or have it done by a professional if you're not comfortable handling machinery.
Align & Balance Have car checked every 12,000 miles or the first time you notice unusual steering behavior or a vibration at highway speeds.
Tire rotation Every 6,000 miles following the manufacturers rotation recommendation. If you have a matching spare, include it in the rotation