Welcome to the thread.
The information which tayyab provided is extremely useful and helpful
If you follow it, it would help to keep your car as good as new over a very long time period.
All you need is a good car shampoo, a good pair of Microfibre cloths, and a quality wax.
The products im using are
Shampoo: Speed Autocare Shampoo
Microfibre Cloths to wash/dry/buff the car
Wax: Meguiars Gold Class Carnauba Wax or Turtle Ice Wax Synthetic Polish.