buy a polish/wax. polish=wax.. they are same thing.
buy a good brand as it will make ur car shine longer.
1. wash ur car thoroughly.
2. wait till dry.
3. park ur car under shade.(dont wax under the sun)
4. polish it lah using motorized polisher if u dont want to sweat so much.
a) polish using polisher sponge.
b) then, buff it using cotton-like cloth.
5. done.