How often should I change the oil?

Every 3000 miles. Oil is cheaper than metal.

What air pressure should I run in my tires?

Look on the side of the tire. It will tell you.

What brand of gasoline should I use?

The cheapest.

How long before I can wax a newly painted car?

Wait until the paint and clearcoat get dull before you wax it.

How often should I wash my Altima?

After you have driven over a salty road or if the car is dirty.

What damages the front end and causes alignment and tire wear problems?

1) Hitting a pot hole or a very rough part of the road
2) Turning the steering wheel while the car is not moving. The car needs to be moving at least a little slowly when the steering wheel is being turned. 

Why did Lowell Hayes choose to specialize in Nissan Altimas?

Becuase parts are relatively inexpensive and they are easy to work on.

Do you have an additional question?