When buying a used car, the first is: know your budget and stay within it, even if you’re “just looking”. Also , View at least 5 cars that are in your price range before making a decision .Next ,Do your research. Some people think that research stops with knowing the Blue Book value of the car you’re interested. After, Based on your test drive, your research and your preferences narrow the field to 3 choices and test drive them again.You should with input from your parents and your mechanical expert pick your prize, choose which car you want to buy and get ready to negotiate price. When you’ve agreed on a price, and if you’re spending more than a couple thousand, it’s worthwhile to condition the sale on an inspection. Once it’s passed inspection it’s time to close the deal and dive off in your new car.