Get a sponge and wash a guys car. Get money from them. Repeat.
While you don't need any specific experience to start a car washing business it would be a good idea to have a background in general business and general accounting principles.
To start your own window washing business, first type up a good business plan, then contact the Small Business Administration about obtaining a business loan.
Depending on which state you live in, you can work at a local hospital. Or you can start your own car washing business that should make you about $15-$20 a car.
you can start at any age- as long as you've passed your driving test!
Ok if you are going to start detailing cars yourself you will need good car washing liquid to wash the cars and a towel or mitt that will not scratch the car. You will also need a drying towel, car wax and armor all. To clean the inside you will need a vacuum and perhaps carpet cleaner.
You can go to ehow.com and type in car rental business in the search box
washing a car
about 150k
buy a car and rent it out
One can start their own car valeting business by first preparing a business plan. Once one has one, a lot needs to be purchased for the car valeting business to operate on, supplies need to be purchased, and employees need to be hired.
If you have to ask, then you have no business even attempting to drive a car.