You start off in small karting events ,at a young age. And if successful move up into formula 3000 and GP2 . After that you seek a contract with an F1 constructor as a test driver , and then a full F1 driver.
if you want to be a driver then you must start in the lower race classes then move up. e.g formula ford, formula renault, gp2. You must then must gain sponsership from a team. if you want to work for...